time travel year 2

Is Time Travel Possible?

We all travel in time! We travel one year in time between birthdays, for example. And we are all traveling in time at approximately the same speed: 1 second per second.

We typically experience time at one second per second. Credit: NASA/JPL-Caltech

NASA's space telescopes also give us a way to look back in time. Telescopes help us see stars and galaxies that are very far away . It takes a long time for the light from faraway galaxies to reach us. So, when we look into the sky with a telescope, we are seeing what those stars and galaxies looked like a very long time ago.

However, when we think of the phrase "time travel," we are usually thinking of traveling faster than 1 second per second. That kind of time travel sounds like something you'd only see in movies or science fiction books. Could it be real? Science says yes!

Image of galaxies, taken by the Hubble Space Telescope.

This image from the Hubble Space Telescope shows galaxies that are very far away as they existed a very long time ago. Credit: NASA, ESA and R. Thompson (Univ. Arizona)

How do we know that time travel is possible?

More than 100 years ago, a famous scientist named Albert Einstein came up with an idea about how time works. He called it relativity. This theory says that time and space are linked together. Einstein also said our universe has a speed limit: nothing can travel faster than the speed of light (186,000 miles per second).

Einstein's theory of relativity says that space and time are linked together. Credit: NASA/JPL-Caltech

What does this mean for time travel? Well, according to this theory, the faster you travel, the slower you experience time. Scientists have done some experiments to show that this is true.

For example, there was an experiment that used two clocks set to the exact same time. One clock stayed on Earth, while the other flew in an airplane (going in the same direction Earth rotates).

After the airplane flew around the world, scientists compared the two clocks. The clock on the fast-moving airplane was slightly behind the clock on the ground. So, the clock on the airplane was traveling slightly slower in time than 1 second per second.

Credit: NASA/JPL-Caltech

Can we use time travel in everyday life?

We can't use a time machine to travel hundreds of years into the past or future. That kind of time travel only happens in books and movies. But the math of time travel does affect the things we use every day.

For example, we use GPS satellites to help us figure out how to get to new places. (Check out our video about how GPS satellites work .) NASA scientists also use a high-accuracy version of GPS to keep track of where satellites are in space. But did you know that GPS relies on time-travel calculations to help you get around town?

GPS satellites orbit around Earth very quickly at about 8,700 miles (14,000 kilometers) per hour. This slows down GPS satellite clocks by a small fraction of a second (similar to the airplane example above).

Illustration of GPS satellites orbiting around Earth

GPS satellites orbit around Earth at about 8,700 miles (14,000 kilometers) per hour. Credit: GPS.gov

However, the satellites are also orbiting Earth about 12,550 miles (20,200 km) above the surface. This actually speeds up GPS satellite clocks by a slighter larger fraction of a second.

Here's how: Einstein's theory also says that gravity curves space and time, causing the passage of time to slow down. High up where the satellites orbit, Earth's gravity is much weaker. This causes the clocks on GPS satellites to run faster than clocks on the ground.

The combined result is that the clocks on GPS satellites experience time at a rate slightly faster than 1 second per second. Luckily, scientists can use math to correct these differences in time.

Illustration of a hand holding a phone with a maps application active.

If scientists didn't correct the GPS clocks, there would be big problems. GPS satellites wouldn't be able to correctly calculate their position or yours. The errors would add up to a few miles each day, which is a big deal. GPS maps might think your home is nowhere near where it actually is!

In Summary:

Yes, time travel is indeed a real thing. But it's not quite what you've probably seen in the movies. Under certain conditions, it is possible to experience time passing at a different rate than 1 second per second. And there are important reasons why we need to understand this real-world form of time travel.

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Exploring History's Greatest Adventures throughout time!

25 Time Travel Novels and series for Children, Middle Grade, and Young Adult

Time Travel Is An Exciting Science Fiction/Fantasy Genre Where The Plot Possibilities Are Truly Endless And They Can Sometimes Be As Educational As They Are Entertaining. Of course, not all time travel books are a set up to teach kids about a specific time period. Many are simply a fun fantasy. They’re the perfect gateway to historical fiction – especially if the child enjoys the time period. Here are our picks for kid-friendly, time-travel books – some old, some new – including series and stand-alone novels. A Wrinkle in Time by Madeleine L’Engle. This book only makes the list because people would expect to see it. But the brother and sister characters do not travel “back” in time. Instead, they travel through space and time, from galaxy to galaxy in search of their father – perhaps to future worlds? For ages 9 – 12. Magic Tree House series by Mary Pope Osborne. There are over 60 books in this series where siblings Jack and Annie go on adventures throughout history experiencing dinosaurs and sabertooth tigers, Vikings, Egyptian Pharoahs and more. These make great early reader books. For ages 5 – 8. The Secret of the Hidden Scrolls by M. J. Thomas is an adventure-packed chapter book series that follows siblings Peter and Mary and their dog, Hank, as they discover ancient scrolls that transport them back to key moments in biblical history. For ages 6 – 9. Rescue on the Oregon Trail (Ranger in Time #1of 13) by Kate Messner. Ranger is a time-traveling golden retriever who has a nose for trouble . . . and always saves the day! For ages 7 – 10 years World’s Worst Time Machine (Volume 1) by Dustin Brady. From the bestselling author of Trapped in a Video Game series, Brady’s laugh-out-loud sense of humor and daring adventure will keep even the most reluctant reader wanting to turn the pages of this new series. For ages 8 – 11. The Secret Lake by Karen Inglis. Siblings Stella and Tom go back 100 years from their London home to solve a mystery in this page-turning instant classic. For ages 8 – 11. George Washington’s Spy (Time Travel Adventures trilogy) by Elvira Woodruff. Ten-year-old Matt Carlton and six friends are accidentally swept back in time–to Boston in 1776! The British now occupy the city, and redcoat guards are everywhere! For ages 7 – 10. One if By Land, Two if By Submarine by Eileen Schnabel. When Paul Revere is kidnapped by a time traveler determined to change the outcome of the American Revolution, thirteen-year-old Kep Westguard is sent to Boston, 1775, to take his famous midnight ride. For ages 10+. Displaced: Both Feet in the Game by JJ Carroll. Seventh grader Nikola and his friends travel back 100 years and must travel over 4,500 miles with no money, no means of transportation and a sinister FBI agent on their heels. For ages 8 – 12. Laurella Swift and the Keys of Time by Allison Parkinson. Laurella Swift and the Keys of Time is the first in a new series of Laurella Swift adventures. The historical fantasy takes middle-grade readers on a rip-roaring escapade to the court of Cyrus the Great. For ages 7 – 12. The Last Musketeer by Stuart Gibbs. On a family trip to Paris, Greg Rich’s parents disappear. They’re not just missing from the city—they’re missing from the century. So, Greg does what any other fourteen-year-old would do: He travels through time to rescue them. For ages 8 – 12. Anachronist : The Infinity Engines series (Book 1) by Andrew Hastie. Travelling into the past using the timelines of ancient artefacts, the Oblivion Order explore the forgotten centuries, ones that never made it into the history books. They make subtle adjustments to the past – saving us from oblivion in the future. Young Adult. Glitch by Laura Martin. Glitchers are people who travel through time to preserve important historical events. Regan Fitz finds a letter from his future self, warning about an impending disaster that threatens him and everyone he knows. For ages 10+. The Rhythm of Time by Questlove. Seventh grader Rahim Reynolds goes back to 1997 and learns what every time traveler before him has: Actions in the past jeopardize the future. For ages 10 – 12. Stealing the Sword (Time Jumpers series Book 1) by Wendy Mass. Aimed at newly independent readers with easy-to-read text, high-interest content, fast-paced plots, and illustrations on every page. For ages 6 – 9. Justice for Joe by Dianna Dorisi Winget. When twelve-year-old Birch first learns the rare clock gene she inherited from her grandmother enables her to time travel, she’s not excited–she’s terrified. For ages 8 – 12. The Hat, George Washington, and Me! By Gregory O. Smith. Part time travel, part crazy school, full-time fun! “Hey Mom, there’s a patriot in my cereal box!” A fast-moving mystery adventure for children ages 8-14. The Eye of Ra by Ben Gartner . For readers graduating from the Magic Tree House series and ready for intense action, dive into this middle grade novel rich with meticulous historical detail. For ages 8 – 12. The Thrifty Guide to the American Revolution : A Handbook for Time Travelers by Jonathan W Stokes. If you had a time travel machine and could take a vacation anywhere in history, this is the only guidebook you would need! For ages 8 – 12. Hot on the Trail in Ancient Egypt by Linda Bailey. Book 1 of the series. All twins Josh and Emma want to do is get out of the creepy Good Times Travel Agency where their little sister, Libby, has led them. But the peculiar shop owner encourages them to open one of his guidebooks first — and they suddenly find themselves transported back in time. The Egypt Game by Zilpha Keatley Snyder. Everyone thinks it’s just a game until strange things start happening. Has the Egypt Game gone too far? For ages 8 – 12. Greg’s First Adventure in Time (Book 1 of 5) by C. M. Huddleston. Archaeology, time travel, and a moose hunt combine to force 12-year-old Greg to face his fears and find his strengths. Greg explores a world that existed more than 3,000 years ago with his new Native American friend Hopelf. While Greg learns about Native American ways of life, how to hunt and fish, and just to survive, he is always searching for a way back home. For ages 10+. The Time Travelers by Linda Buckley-Archer. Gideon, Peter, and Kate are swept into a journey through eighteenth-century London and form a bond that, they hope, will stand strong in the face of unfathomable treachery. For ages 8 – 12. Found (Book 1 of 8) by Margaret Peterson Haddix. One night a plane appeared out of nowhere, the only passengers aboard: thirty-six babies. As soon as they were taken off the plane, it vanished. Now, thirteen years later, two of those children are receiving sinister messages, and they begin to investigate their past. Their quest to discover where they really came from leads them to a conspiracy that reaches from the far past to the distant future–and will take them hurtling through time. For ages 10+. The History Mystery Kids: Fiasco in Florida (Book 1 of 10) by Daniel Kenney. Professor Abner Jefferson is missing. His children watched him get sucked into a book. Now they must find him. By going back… through History! For ages 8 – 10.

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Time Traveller

Lesson Overview

Students will be introduced to terminology describing the sequence of time and investigate the concepts of past, present and future. Using collaborative learning strategies, students discuss prior knowledge and share their ideas and thoughts with others. Visual literacy is developed when viewing the eBook images and students are encouraged to take a closer look at the pictures. The Time Hopper game is an opportunity to evaluate and assess the understanding of each student individually. Student page activities consolidate the learning and concepts introduced during the lesson. The blue and black activities could be presented as individual or small group tasks.

The historical skills and concepts addressed in this lesson include chronology, sequencing and continuity and change.

Outcomes Covered

Click on your curriculum to view the full list of outcomes covered by this Lesson.

Focus Question

What words do we use to describe time?

Lesson Vocabulary

ancient, back, future, history, long ago, month, old, past, present, year

Teaching and Learning Sequence

Lesson introduction, learning intention.

Students will be able to:

Use appropriate terminology to communicate an understanding of the distinction between the past, present and future. (rubric)
Use collaborative learning strategies.
Share their ideas and thoughts with others.

Core Activity

To stimulate interest and curiosity ( engage ), view the stimulus video Time Traveller as a class. Make a whole class talking circle where students discuss the following question prompts.

Big Block travelled through time. Is this really possible?
Where did Big Block visit?
At the end of the song, Big Block asks, ‘Where are we?’ Can you answer him?
If you could blink and travel through time, where would you go? Why?

( Engage Explore Questioning )

Join or sign in to unlock the rest of this lesson’s differentiated activities

6 core activities.

These are central to the focus question or learning intention and include surface, deeper and transfer of learning.

1 Deeper Learning Activity

These take thinking to the next level and require more time, effort and sometimes research.

1 Challenging Activity

These require extended critical and creative thinking.

Quality videos, interactives, eBooks and more are built into our lessons to support learning.

Downloadable Program

Every unit and lesson comes with a downloadable fully editable Program.

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A beginner's guide to time travel

Learn exactly how Einstein's theory of relativity works, and discover how there's nothing in science that says time travel is impossible.

Actor Rod Taylor tests his time machine in a still from the film 'The Time Machine', directed by George Pal, 1960.

Everyone can travel in time . You do it whether you want to or not, at a steady rate of one second per second. You may think there's no similarity to traveling in one of the three spatial dimensions at, say, one foot per second. But according to Einstein 's theory of relativity , we live in a four-dimensional continuum — space-time — in which space and time are interchangeable.

Einstein found that the faster you move through space, the slower you move through time — you age more slowly, in other words. One of the key ideas in relativity is that nothing can travel faster than the speed of light — about 186,000 miles per second (300,000 kilometers per second), or one light-year per year). But you can get very close to it. If a spaceship were to fly at 99% of the speed of light, you'd see it travel a light-year of distance in just over a year of time.

That's obvious enough, but now comes the weird part. For astronauts onboard that spaceship, the journey would take a mere seven weeks. It's a consequence of relativity called time dilation , and in effect, it means the astronauts have jumped about 10 months into the future.

Traveling at high speed isn't the only way to produce time dilation. Einstein showed that gravitational fields produce a similar effect — even the relatively weak field here on the surface of Earth . We don't notice it, because we spend all our lives here, but more than 12,400 miles (20,000 kilometers) higher up gravity is measurably weaker— and time passes more quickly, by about 45 microseconds per day. That's more significant than you might think, because it's the altitude at which GPS satellites orbit Earth, and their clocks need to be precisely synchronized with ground-based ones for the system to work properly.

The satellites have to compensate for time dilation effects due both to their higher altitude and their faster speed. So whenever you use the GPS feature on your smartphone or your car's satnav, there's a tiny element of time travel involved. You and the satellites are traveling into the future at very slightly different rates.

But for more dramatic effects, we need to look at much stronger gravitational fields, such as those around black holes , which can distort space-time so much that it folds back on itself. The result is a so-called wormhole, a concept that's familiar from sci-fi movies, but actually originates in Einstein's theory of relativity. In effect, a wormhole is a shortcut from one point in space-time to another. You enter one black hole, and emerge from another one somewhere else. Unfortunately, it's not as practical a means of transport as Hollywood makes it look. That's because the black hole's gravity would tear you to pieces as you approached it, but it really is possible in theory. And because we're talking about space-time, not just space, the wormhole's exit could be at an earlier time than its entrance; that means you would end up in the past rather than the future.

Trajectories in space-time that loop back into the past are given the technical name "closed timelike curves." If you search through serious academic journals, you'll find plenty of references to them — far more than you'll find to "time travel." But in effect, that's exactly what closed timelike curves are all about — time travel

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There's another way to produce a closed timelike curve that doesn't involve anything quite so exotic as a black hole or wormhole: You just need a simple rotating cylinder made of super-dense material. This so-called Tipler cylinder is the closest that real-world physics can get to an actual, genuine time machine. But it will likely never be built in the real world, so like a wormhole, it's more of an academic curiosity than a viable engineering design.

Yet as far-fetched as these things are in practical terms, there's no fundamental scientific reason — that we currently know of — that says they are impossible. That's a thought-provoking situation, because as the physicist Michio Kaku is fond of saying, "Everything not forbidden is compulsory" (borrowed from T.H. White's novel, "The Once And Future King"). He doesn't mean time travel has to happen everywhere all the time, but Kaku is suggesting that the universe is so vast it ought to happen somewhere at least occasionally. Maybe some super-advanced civilization in another galaxy knows how to build a working time machine, or perhaps closed timelike curves can even occur naturally under certain rare conditions.

An artist's impression of a pair of neutron stars - a Tipler cylinder requires at least ten.

This raises problems of a different kind — not in science or engineering, but in basic logic. If time travel is allowed by the laws of physics, then it's possible to envision a whole range of paradoxical scenarios . Some of these appear so illogical that it's difficult to imagine that they could ever occur. But if they can't, what's stopping them?

Thoughts like these prompted Stephen Hawking , who was always skeptical about the idea of time travel into the past, to come up with his "chronology protection conjecture" — the notion that some as-yet-unknown law of physics prevents closed timelike curves from happening. But that conjecture is only an educated guess, and until it is supported by hard evidence, we can come to only one conclusion: Time travel is possible.

A party for time travelers

Hawking was skeptical about the feasibility of time travel into the past, not because he had disproved it, but because he was bothered by the logical paradoxes it created. In his chronology protection conjecture, he surmised that physicists would eventually discover a flaw in the theory of closed timelike curves that made them impossible.

In 2009, he came up with an amusing way to test this conjecture. Hawking held a champagne party (shown in his Discovery Channel program), but he only advertised it after it had happened. His reasoning was that, if time machines eventually become practical, someone in the future might read about the party and travel back to attend it. But no one did — Hawking sat through the whole evening on his own. This doesn't prove time travel is impossible, but it does suggest that it never becomes a commonplace occurrence here on Earth.

The arrow of time

One of the distinctive things about time is that it has a direction — from past to future. A cup of hot coffee left at room temperature always cools down; it never heats up. Your cellphone loses battery charge when you use it; it never gains charge. These are examples of entropy , essentially a measure of the amount of "useless" as opposed to "useful" energy. The entropy of a closed system always increases, and it's the key factor determining the arrow of time.

It turns out that entropy is the only thing that makes a distinction between past and future. In other branches of physics, like relativity or quantum theory, time doesn't have a preferred direction. No one knows where time's arrow comes from. It may be that it only applies to large, complex systems, in which case subatomic particles may not experience the arrow of time.

Time travel paradox

If it's possible to travel back into the past — even theoretically — it raises a number of brain-twisting paradoxes — such as the grandfather paradox — that even scientists and philosophers find extremely perplexing.

Killing Hitler

A time traveler might decide to go back and kill him in his infancy. If they succeeded, future history books wouldn't even mention Hitler — so what motivation would the time traveler have for going back in time and killing him?

Killing your grandfather

Instead of killing a young Hitler, you might, by accident, kill one of your own ancestors when they were very young. But then you would never be born, so you couldn't travel back in time to kill them, so you would be born after all, and so on …

A closed loop

Suppose the plans for a time machine suddenly appear from thin air on your desk. You spend a few days building it, then use it to send the plans back to your earlier self. But where did those plans originate? Nowhere — they are just looping round and round in time.

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Time travel: Is it possible?

Science says time travel is possible, but probably not in the way you're thinking.

time travel graphic illustration of a tunnel with a clock face swirling through the tunnel.

Albert Einstein's theory

General relativity and GPS
Wormhole travel
Alternate theories

Science fiction

Is time travel possible? Short answer: Yes, and you're doing it right now — hurtling into the future at the impressive rate of one second per second.

You're pretty much always moving through time at the same speed, whether you're watching paint dry or wishing you had more hours to visit with a friend from out of town.

But this isn't the kind of time travel that's captivated countless science fiction writers, or spurred a genre so extensive that Wikipedia lists over 400 titles in the category "Movies about Time Travel." In franchises like " Doctor Who ," " Star Trek ," and "Back to the Future" characters climb into some wild vehicle to blast into the past or spin into the future. Once the characters have traveled through time, they grapple with what happens if you change the past or present based on information from the future (which is where time travel stories intersect with the idea of parallel universes or alternate timelines).

Related: The best sci-fi time machines ever

Although many people are fascinated by the idea of changing the past or seeing the future before it's due, no person has ever demonstrated the kind of back-and-forth time travel seen in science fiction or proposed a method of sending a person through significant periods of time that wouldn't destroy them on the way. And, as physicist Stephen Hawking pointed out in his book " Black Holes and Baby Universes" (Bantam, 1994), "The best evidence we have that time travel is not possible, and never will be, is that we have not been invaded by hordes of tourists from the future."

Science does support some amount of time-bending, though. For example, physicist Albert Einstein 's theory of special relativity proposes that time is an illusion that moves relative to an observer. An observer traveling near the speed of light will experience time, with all its aftereffects (boredom, aging, etc.) much more slowly than an observer at rest. That's why astronaut Scott Kelly aged ever so slightly less over the course of a year in orbit than his twin brother who stayed here on Earth.

Related: Controversially, physicist argues that time is real

There are other scientific theories about time travel, including some weird physics that arise around wormholes , black holes and string theory . For the most part, though, time travel remains the domain of an ever-growing array of science fiction books, movies, television shows, comics, video games and more.

Scott and Mark Kelly sit side by side wearing a blue NASA jacket and jeans

Einstein developed his theory of special relativity in 1905. Along with his later expansion, the theory of general relativity , it has become one of the foundational tenets of modern physics. Special relativity describes the relationship between space and time for objects moving at constant speeds in a straight line.

The short version of the theory is deceptively simple. First, all things are measured in relation to something else — that is to say, there is no "absolute" frame of reference. Second, the speed of light is constant. It stays the same no matter what, and no matter where it's measured from. And third, nothing can go faster than the speed of light.

From those simple tenets unfolds actual, real-life time travel. An observer traveling at high velocity will experience time at a slower rate than an observer who isn't speeding through space.

While we don't accelerate humans to near-light-speed, we do send them swinging around the planet at 17,500 mph (28,160 km/h) aboard the International Space Station . Astronaut Scott Kelly was born after his twin brother, and fellow astronaut, Mark Kelly . Scott Kelly spent 520 days in orbit, while Mark logged 54 days in space. The difference in the speed at which they experienced time over the course of their lifetimes has actually widened the age gap between the two men.

"So, where[as] I used to be just 6 minutes older, now I am 6 minutes and 5 milliseconds older," Mark Kelly said in a panel discussion on July 12, 2020, Space.com previously reported . "Now I've got that over his head."

General relativity and GPS time travel

Graphic showing the path of GPS satellites around Earth at the center of the image.

The difference that low earth orbit makes in an astronaut's life span may be negligible — better suited for jokes among siblings than actual life extension or visiting the distant future — but the dilation in time between people on Earth and GPS satellites flying through space does make a difference.

Can wormholes take us back in time?

General relativity might also provide scenarios that could allow travelers to go back in time, according to NASA . But the physical reality of those time-travel methods is no piece of cake.

Wormholes are theoretical "tunnels" through the fabric of space-time that could connect different moments or locations in reality to others. Also known as Einstein-Rosen bridges or white holes, as opposed to black holes, speculation about wormholes abounds. But despite taking up a lot of space (or space-time) in science fiction, no wormholes of any kind have been identified in real life.

Related: Best time travel movies

"The whole thing is very hypothetical at this point," Stephen Hsu, a professor of theoretical physics at the University of Oregon, told Space.com sister site Live Science . "No one thinks we're going to find a wormhole anytime soon."

Primordial wormholes are predicted to be just 10^-34 inches (10^-33 centimeters) at the tunnel's "mouth". Previously, they were expected to be too unstable for anything to be able to travel through them. However, a study claims that this is not the case, Live Science reported .

The theory, which suggests that wormholes could work as viable space-time shortcuts, was described by physicist Pascal Koiran. As part of the study, Koiran used the Eddington-Finkelstein metric, as opposed to the Schwarzschild metric which has been used in the majority of previous analyses.

In the past, the path of a particle could not be traced through a hypothetical wormhole. However, using the Eddington-Finkelstein metric, the physicist was able to achieve just that.

Koiran's paper was described in October 2021, in the preprint database arXiv , before being published in the Journal of Modern Physics D.

Alternate time travel theories

While Einstein's theories appear to make time travel difficult, some researchers have proposed other solutions that could allow jumps back and forth in time. These alternate theories share one major flaw: As far as scientists can tell, there's no way a person could survive the kind of gravitational pulling and pushing that each solution requires.

Infinite cylinder theory

Astronomer Frank Tipler proposed a mechanism (sometimes known as a Tipler Cylinder ) where one could take matter that is 10 times the sun's mass, then roll it into a very long, but very dense cylinder. The Anderson Institute , a time travel research organization, described the cylinder as "a black hole that has passed through a spaghetti factory."

After spinning this black hole spaghetti a few billion revolutions per minute, a spaceship nearby — following a very precise spiral around the cylinder — could travel backward in time on a "closed, time-like curve," according to the Anderson Institute.

The major problem is that in order for the Tipler Cylinder to become reality, the cylinder would need to be infinitely long or be made of some unknown kind of matter. At least for the foreseeable future, endless interstellar pasta is beyond our reach.

Time donuts

Theoretical physicist Amos Ori at the Technion-Israel Institute of Technology in Haifa, Israel, proposed a model for a time machine made out of curved space-time — a donut-shaped vacuum surrounded by a sphere of normal matter.

"The machine is space-time itself," Ori told Live Science . "If we were to create an area with a warp like this in space that would enable time lines to close on themselves, it might enable future generations to return to visit our time."

Amos Ori is a theoretical physicist at the Technion-Israel Institute of Technology in Haifa, Israel. His research interests and publications span the fields of general relativity, black holes, gravitational waves and closed time lines.

There are a few caveats to Ori's time machine. First, visitors to the past wouldn't be able to travel to times earlier than the invention and construction of the time donut. Second, and more importantly, the invention and construction of this machine would depend on our ability to manipulate gravitational fields at will — a feat that may be theoretically possible but is certainly beyond our immediate reach.

Graphic illustration of the TARDIS (Time and Relative Dimensions in Space) traveling through space, surrounded by stars.

Time travel has long occupied a significant place in fiction. Since as early as the "Mahabharata," an ancient Sanskrit epic poem compiled around 400 B.C., humans have dreamed of warping time, Lisa Yaszek, a professor of science fiction studies at the Georgia Institute of Technology in Atlanta, told Live Science .

Every work of time-travel fiction creates its own version of space-time, glossing over one or more scientific hurdles and paradoxes to achieve its plot requirements.

Some make a nod to research and physics, like " Interstellar ," a 2014 film directed by Christopher Nolan. In the movie, a character played by Matthew McConaughey spends a few hours on a planet orbiting a supermassive black hole, but because of time dilation, observers on Earth experience those hours as a matter of decades.

Others take a more whimsical approach, like the "Doctor Who" television series. The series features the Doctor, an extraterrestrial "Time Lord" who travels in a spaceship resembling a blue British police box. "People assume," the Doctor explained in the show, "that time is a strict progression from cause to effect, but actually from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly, timey-wimey stuff."

Long-standing franchises like the "Star Trek" movies and television series, as well as comic universes like DC and Marvel Comics, revisit the idea of time travel over and over.

Related: Marvel movies in order: chronological & release order

Here is an incomplete (and deeply subjective) list of some influential or notable works of time travel fiction:

Books about time travel:

A sketch from the Christmas Carol shows a cloaked figure on the left and a person kneeling and clutching their head with their hands.

Rip Van Winkle (Cornelius S. Van Winkle, 1819) by Washington Irving
A Christmas Carol (Chapman & Hall, 1843) by Charles Dickens
The Time Machine (William Heinemann, 1895) by H. G. Wells
A Connecticut Yankee in King Arthur's Court (Charles L. Webster and Co., 1889) by Mark Twain
The Restaurant at the End of the Universe (Pan Books, 1980) by Douglas Adams
A Tale of Time City (Methuen, 1987) by Diana Wynn Jones
The Outlander series (Delacorte Press, 1991-present) by Diana Gabaldon
Harry Potter and the Prisoner of Azkaban (Bloomsbury/Scholastic, 1999) by J. K. Rowling
Thief of Time (Doubleday, 2001) by Terry Pratchett
The Time Traveler's Wife (MacAdam/Cage, 2003) by Audrey Niffenegger
All You Need is Kill (Shueisha, 2004) by Hiroshi Sakurazaka

Movies about time travel:

Planet of the Apes (1968)
Superman (1978)
Time Bandits (1981)
The Terminator (1984)
Back to the Future series (1985, 1989, 1990)
Star Trek IV: The Voyage Home (1986)
Bill & Ted's Excellent Adventure (1989)
Groundhog Day (1993)
Galaxy Quest (1999)
The Butterfly Effect (2004)
13 Going on 30 (2004)
The Lake House (2006)
Meet the Robinsons (2007)
Hot Tub Time Machine (2010)
Midnight in Paris (2011)
Looper (2012)
X-Men: Days of Future Past (2014)
Edge of Tomorrow (2014)
Interstellar (2014)
Doctor Strange (2016)
A Wrinkle in Time (2018)
The Last Sharknado: It's About Time (2018)
Avengers: Endgame (2019)
Tenet (2020)
Palm Springs (2020)
Zach Snyder's Justice League (2021)
The Tomorrow War (2021)

Television about time travel:

Image of the Star Trek spaceship USS Enterprise

Doctor Who (1963-present)
The Twilight Zone (1959-1964) (multiple episodes)
Star Trek (multiple series, multiple episodes)
Samurai Jack (2001-2004)
Lost (2004-2010)
Phil of the Future (2004-2006)
Steins;Gate (2011)
Outlander (2014-2023)
Loki (2021-present)

Games about time travel:

Chrono Trigger (1995)
TimeSplitters (2000-2005)
Kingdom Hearts (2002-2019)
Prince of Persia: Sands of Time (2003)
God of War II (2007)
Ratchet and Clank Future: A Crack In Time (2009)
Sly Cooper: Thieves in Time (2013)
Dishonored 2 (2016)
Titanfall 2 (2016)
Outer Wilds (2019)

Additional resources

Explore physicist Peter Millington's thoughts about Stephen Hawking's time travel theories at The Conversation . Check out a kid-friendly explanation of real-world time travel from NASA's Space Place . For an overview of time travel in fiction and the collective consciousness, read " Time Travel: A History " (Pantheon, 2016) by James Gleik.

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: [email protected].

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Ailsa is a staff writer for How It Works magazine, where she writes science, technology, space, history and environment features. Based in the U.K., she graduated from the University of Stirling with a BA (Hons) journalism degree. Previously, Ailsa has written for Cardiff Times magazine, Psychology Now and numerous science bookazines.

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Is Time Travel Possible?

The laws of physics allow time travel. So why haven’t people become chronological hoppers?

By Sarah Scoles

yuanyuan yan/Getty Images

In the movies, time travelers typically step inside a machine and—poof—disappear. They then reappear instantaneously among cowboys, knights or dinosaurs. What these films show is basically time teleportation .

Scientists don’t think this conception is likely in the real world, but they also don’t relegate time travel to the crackpot realm. In fact, the laws of physics might allow chronological hopping, but the devil is in the details.

Time traveling to the near future is easy: you’re doing it right now at a rate of one second per second, and physicists say that rate can change. According to Einstein’s special theory of relativity, time’s flow depends on how fast you’re moving. The quicker you travel, the slower seconds pass. And according to Einstein’s general theory of relativity , gravity also affects clocks: the more forceful the gravity nearby, the slower time goes.

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“Near massive bodies—near the surface of neutron stars or even at the surface of the Earth, although it’s a tiny effect—time runs slower than it does far away,” says Dave Goldberg, a cosmologist at Drexel University.

If a person were to hang out near the edge of a black hole , where gravity is prodigious, Goldberg says, only a few hours might pass for them while 1,000 years went by for someone on Earth. If the person who was near the black hole returned to this planet, they would have effectively traveled to the future. “That is a real effect,” he says. “That is completely uncontroversial.”

Going backward in time gets thorny, though (thornier than getting ripped to shreds inside a black hole). Scientists have come up with a few ways it might be possible, and they have been aware of time travel paradoxes in general relativity for decades. Fabio Costa, a physicist at the Nordic Institute for Theoretical Physics, notes that an early solution with time travel began with a scenario written in the 1920s. That idea involved massive long cylinder that spun fast in the manner of straw rolled between your palms and that twisted spacetime along with it. The understanding that this object could act as a time machine allowing one to travel to the past only happened in the 1970s, a few decades after scientists had discovered a phenomenon called “closed timelike curves.”

“A closed timelike curve describes the trajectory of a hypothetical observer that, while always traveling forward in time from their own perspective, at some point finds themselves at the same place and time where they started, creating a loop,” Costa says. “This is possible in a region of spacetime that, warped by gravity, loops into itself.”

“Einstein read [about closed timelike curves] and was very disturbed by this idea,” he adds. The phenomenon nevertheless spurred later research.

Science began to take time travel seriously in the 1980s. In 1990, for instance, Russian physicist Igor Novikov and American physicist Kip Thorne collaborated on a research paper about closed time-like curves. “They started to study not only how one could try to build a time machine but also how it would work,” Costa says.

Just as importantly, though, they investigated the problems with time travel. What if, for instance, you tossed a billiard ball into a time machine, and it traveled to the past and then collided with its past self in a way that meant its present self could never enter the time machine? “That looks like a paradox,” Costa says.

Since the 1990s, he says, there’s been on-and-off interest in the topic yet no big breakthrough. The field isn’t very active today, in part because every proposed model of a time machine has problems. “It has some attractive features, possibly some potential, but then when one starts to sort of unravel the details, there ends up being some kind of a roadblock,” says Gaurav Khanna of the University of Rhode Island.

For instance, most time travel models require negative mass —and hence negative energy because, as Albert Einstein revealed when he discovered E = mc 2 , mass and energy are one and the same. In theory, at least, just as an electric charge can be positive or negative, so can mass—though no one’s ever found an example of negative mass. Why does time travel depend on such exotic matter? In many cases, it is needed to hold open a wormhole—a tunnel in spacetime predicted by general relativity that connects one point in the cosmos to another.

Without negative mass, gravity would cause this tunnel to collapse. “You can think of it as counteracting the positive mass or energy that wants to traverse the wormhole,” Goldberg says.

Khanna and Goldberg concur that it’s unlikely matter with negative mass even exists, although Khanna notes that some quantum phenomena show promise, for instance, for negative energy on very small scales. But that would be “nowhere close to the scale that would be needed” for a realistic time machine, he says.

These challenges explain why Khanna initially discouraged Caroline Mallary, then his graduate student at the University of Massachusetts Dartmouth, from doing a time travel project. Mallary and Khanna went forward anyway and came up with a theoretical time machine that didn’t require negative mass. In its simplistic form, Mallary’s idea involves two parallel cars, each made of regular matter. If you leave one parked and zoom the other with extreme acceleration, a closed timelike curve will form between them.

Easy, right? But while Mallary’s model gets rid of the need for negative matter, it adds another hurdle: it requires infinite density inside the cars for them to affect spacetime in a way that would be useful for time travel. Infinite density can be found inside a black hole, where gravity is so intense that it squishes matter into a mind-bogglingly small space called a singularity. In the model, each of the cars needs to contain such a singularity. “One of the reasons that there's not a lot of active research on this sort of thing is because of these constraints,” Mallary says.

Other researchers have created models of time travel that involve a wormhole, or a tunnel in spacetime from one point in the cosmos to another. “It's sort of a shortcut through the universe,” Goldberg says. Imagine accelerating one end of the wormhole to near the speed of light and then sending it back to where it came from. “Those two sides are no longer synced,” he says. “One is in the past; one is in the future.” Walk between them, and you’re time traveling.

You could accomplish something similar by moving one end of the wormhole near a big gravitational field—such as a black hole—while keeping the other end near a smaller gravitational force. In that way, time would slow down on the big gravity side, essentially allowing a particle or some other chunk of mass to reside in the past relative to the other side of the wormhole.

Making a wormhole requires pesky negative mass and energy, however. A wormhole created from normal mass would collapse because of gravity. “Most designs tend to have some similar sorts of issues,” Goldberg says. They’re theoretically possible, but there’s currently no feasible way to make them, kind of like a good-tasting pizza with no calories.

And maybe the problem is not just that we don’t know how to make time travel machines but also that it’s not possible to do so except on microscopic scales—a belief held by the late physicist Stephen Hawking. He proposed the chronology protection conjecture: The universe doesn’t allow time travel because it doesn’t allow alterations to the past. “It seems there is a chronology protection agency, which prevents the appearance of closed timelike curves and so makes the universe safe for historians,” Hawking wrote in a 1992 paper in Physical Review D .

Part of his reasoning involved the paradoxes time travel would create such as the aforementioned situation with a billiard ball and its more famous counterpart, the grandfather paradox : If you go back in time and kill your grandfather before he has children, you can’t be born, and therefore you can’t time travel, and therefore you couldn’t have killed your grandfather. And yet there you are.

Those complications are what interests Massachusetts Institute of Technology philosopher Agustin Rayo, however, because the paradoxes don’t just call causality and chronology into question. They also make free will seem suspect. If physics says you can go back in time, then why can’t you kill your grandfather? “What stops you?” he says. Are you not free?

Rayo suspects that time travel is consistent with free will, though. “What’s past is past,” he says. “So if, in fact, my grandfather survived long enough to have children, traveling back in time isn’t going to change that. Why will I fail if I try? I don’t know because I don’t have enough information about the past. What I do know is that I’ll fail somehow.”

If you went to kill your grandfather, in other words, you’d perhaps slip on a banana en route or miss the bus. “It's not like you would find some special force compelling you not to do it,” Costa says. “You would fail to do it for perfectly mundane reasons.”

In 2020 Costa worked with Germain Tobar, then his undergraduate student at the University of Queensland in Australia, on the math that would underlie a similar idea: that time travel is possible without paradoxes and with freedom of choice.

Goldberg agrees with them in a way. “I definitely fall into the category of [thinking that] if there is time travel, it will be constructed in such a way that it produces one self-consistent view of history,” he says. “Because that seems to be the way that all the rest of our physical laws are constructed.”

No one knows what the future of time travel to the past will hold. And so far, no time travelers have come to tell us about it.

A history of time travel: the how, the why and the when of turning back the clock

Pop on Aqua's 'Turn Back Time' and settle in

For most of human history, the world didn’t change very quickly. Until the 1700s, kids could largely expect their lives to be similar to their parents, and that their children would have an experience very similar to their own, too. There were obviously changes in how humans lived over longer stretches of time, but nothing that even different generations could easily observe.

My first introduction to science fiction was Valérian and Laureline. I was ten years old. Every Wednesday there was a magazine called Pilote in France, and there was two pages of Valerian every week. It was the first time I’d seen a girl and a guy in space, agents travelling in time and space. That was amazing.

The past is written. The present? We have to deal with it. But the future is a white page. So I don’t understand why people on this white page are putting all this darkness.

God! Let’s have some color! Let’s have some fun! Let’s at least imagine a better world. Maybe we won’t be able to do it, but we have to try.

The industrial revolution changed all of this. For the first time in human history, the pace of technological change was visible within a human lifespan.

It is not a coincidence that it was only after science and technological change became a normal part of the human experience, that time travel became something we dreamed of.

Time travel is actually somewhat unique in science fiction. Many core concepts have their origins earlier in history.

The historical roots of the concept of a 'robot' can be seen in Jewish folklore for example: Golems were anthropomorphic beings sculpted from clay. In Greek mythology, characters would travel to other worlds, and it's no coincidence that The Matrix features a character called Persephone. But time travel is different.

The first real work to envisage travelling in time was The Time Machine by HG Wells, which was published in 1895.

The book tells the story of a scientist who builds a machine that will take him to the year 802,701 - a world in which ape-like Morlocks are evolutionary descendants of humanity, and have regressed to a primitive lifestyle.

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The book was a product of its time - both in terms of the science played upon (Charles Darwin had only published Origin of the Species 35 years earlier), and the racist attitudes: it is speculated that the Morlocks were inspired by the Morlachs, a real ethnic group in the Balkans who were often characterised as “primitive”.

Real science

But of course, this was science fiction - what about science fact? The two have always been closely linked, and during the early days it was no different. In 1907, the physicist Hermann Minkowski first argued that Einstein’s Special Relativity could be expressed in geometric terms as a fourth dimension (to add to our known three) - which is exactly how Wells visualised time travel in his work of fiction.

The development of Special and then General Relativity was significant as it provided the theoretical backbone for how time travel could be conceived in scientific terms. In 1949 Kurt Gödel took Einstein’s work and came up with a solution which as a mathematical necessity included what he called “closed timelike curves” - the idea that if you travel far enough, time will loop back around (like how if you keep flying East, you’ll eventually end up back where you started).

Minkowski's expression of the fourth dimension, no special glasses needed

In other words, using what became known as the Gödel Metric, it is theoretically possible to travel between any one point in time and space and any other.

There was just one problem: for Gödel’s theory to be right, the universe would have to be spinning - and scientists don’t believe that it is. So while the maths might make sense, Gödel’s universe does not appear to be the one we’re actually living in. Though he never gave up hope that he might be right: Apparently even on this deathbed, he would ask if anyone has found evidence of a spinning universe. And if he does ever turn out to be right, it means that time travel can happen, and is actually fairly straightforward (well, as far as physics goes anyway).

Since Gödel, scientists have continued to hypothesise about time travel, with perhaps the best known example being tachyons - or particles that move faster than the speed of light (therefore, effectively travelling in time). So far, despite one false alarm at CERN in 2011, there is no evidence that they actually exist.

Chancers and hoaxes

Of course, the lack of real science when it comes to time travel has not stopped some people from claiming to have done it. With the likes of Marty McFly and Doctor Who on the brain, chancers and hoaxers have realised that time travel is immediately a compelling prospect. Here’s a couple of amusing examples.

At the turn of the millennium, when the internet was still in its infancy, forums were captivated by the story of John Titor. Titor claimed he was from the year 2036, and had been sent back in time by the government to obtain an IBM 5100 computer. The thinking appeared to be that by obtaining the computer, the government could find a solution to the UNIX 2038 bug - in which clocks could be reset, Millennium Bug-style, leading to chaos everywhere.

Posting on the 'Time Travel Institute' forums, Titor went into details on how his time machine worked: It was powered by “two top-spin, dual positive singularities”, and used an X-ray venting system. He also gave a potted history of what humanity could expect: A new American civil war in 2004, and World War III in 2015. He also claimed the “many worlds” interpretation of quantum physics was true, hence why he wasn’t violating the so-called “grandfather paradox”.

Titor claimed he was from the year 2036, and had been sent back in time by the government to obtain an IBM 5100 computer.

Okay, so he probably wasn’t a real time traveller, but in the early days of the internet, when anonymity was more commonplace, he truly captured the imaginations of nerdy early adopters who perhaps, just a little bit, hoped that he might be the real thing.

More recently, in 2013, an Iranian scientist named Ali Razeghi claimed to have invented a time machine of sorts. It was supposedly capable of predicting the next 5-8 years for an individual, with up to 98% accuracy. According to The Telegraph , Razeghi said the invention fits into the size of a standard PC case and “It will not take you into the future, it will bring the future to you”. The idea is that the Iranian government could use it to predict future security threats and military confrontations. So perhaps it is time to check in and see if he managed to predict Donald Trump?

The actual Time Lord, Professor Stephen Hawking

So is this the best we can do? Will we ever manage to crack time travel? Some scientists are still sceptical that it could ever be possible. This includes Stephen Hawking, who proposed the 'Chronology Protection Conjecture' – which is what it sounds like. Essentially, he argues that the laws of physics are as they are to specifically make time travel impossible – on all but “submicroscopic” scales. Essentially, this is to protect how causality works, as if we are suddenly allowed to travel back and kill our grandfathers, it would create massive time paradoxes.

Hawking revealed to Ars Technica in 2012 how he had held a party for time travellers, but only sent out invitations after the date it was held. So did the party support his argument that time travel is impossible? Or did he end up spending the evening in the company of John Titor and Doctor Who?

“I sat there a long time, but no one came”, he said, much to our disappointment.

Huge thanks to Stephen Jorgenson-Murray for walking us through some of the more brain-mangling science for this article.

To celebrate the release of Valerian and the City of a Thousand Planets , Luc Besson is today behind the lens at TechRadar. Here’s what we’ve got in store for you:

Luc Besson presents TechRadar
From Verne to Valerian: how France became the home of sci-fi
Luc Besson talks streaming, viral videos and cinema tech
Star spangled glamour: making space travel cooler than ever before
A history of time travel: the how, the why and the when
20 best sci-fi films on Netflix and Amazon Prime
Amazing future tech from sci-fi films that totally exist now

Valerian and the City of a Thousand Planets is released in UK cinemas August 2nd, and is out now in the US.

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Time travel is possible, but it’s a one-way ticket

Chenoa van den Boogaard , Physics and Astronomy editor

The ability to travel through time, whether it is to fix a mistake in the past or gain insight into the future, has long been embraced by science fiction and debated by theoretical physicists. While the debate continues over whether travelling into the past is possible, physicists have determined that travelling to the future most certainly is. And you don’t need a wormhole or a DeLorean to do it.

Real-life time travel occurs through time dilation, a property of Einstein’s special relativity . Einstein was the first to realize that time is not constant, as previously believed, but instead slows down as you move faster through space.

As part of his theory, Einstein re-envisioned space itself. He coined the phrase “spacetime,” fusing the three dimensions of space and one dimension of time into a single term. Instead of treating space as a flat and rigid place that holds all the objects in the universe, Einstein thought of it as curved and malleable, able to form gravitational dips around masses that pull other objects in, just as a bowling ball placed in the centre of a trampoline would cause any smaller object placed on the trampoline to slide towards the centre.

A computer-generated representation of Einstein’s curved spacetime. The Earth creates a gravitational dip in the fabric of spacetime which is deepest at its core. Courtesy and Â© of NASA

The closer an object gets to the centre of the dip, the faster it accelerates. The centre of the Earth’s gravitational dip is located at the Earth’s core, where gravitational acceleration is strongest. According to Einstein’s theory, because time moves more slowly as you move faster through space, the closer an object is to the centre of the Earth, the slower time moves for that object.

This effect can be seen in GPS satellites, which orbit 20,200 kilometres above the Earth’s surface. These satellites have highly precise clocks onboard that gain an average of 38 microseconds per day due to time dilation. While this time gain seems insignificant, GPS satellites rely on their onboard clocks to maintain precise global positioning. Running 38 microseconds fast would result in a positioning error of nearly 10 kilometres, an error that would increase daily if the time difference were not constantly corrected.

A more dramatic example of time dilation can be seen in the movie Interstellar when Matthew McConaughey and his crew land on a planet with an extreme gravitational field caused by a nearby black hole. Because of the black hole’s intense gravitational influence, time slows dramatically for the crew on the planet, making one hour on the surface equal to seven years on Earth. This is why, when the crew returns to Earth, Matthew McConaughey’s daughter is an old woman while he appears to be the same age as when he left.

So why hasn’t humanity succeeded in making such drastic leaps forward in time? The answer to this question comes down to velocity. In order for humanity to send a traveller years into the future, we would either have to take advantage of the intense gravitational acceleration caused by black holes or send the traveller rocketing into space at close to the speed of light (about 1 billion km/h). With our current technology , jumping a few microseconds into the future is all humans can manage.

But if technology one day allows us to send a human into the future by travelling close to the speed of light, would there be any way for the traveller to use time dilation to return to the past and report her findings? “Interstellar travel reaching close to the speed of light might be possible,” says Dr. Jaymie Matthews , professor of astrophysics at the University of British Columbia, “[but] this voyage is one way into the future, not back to the past.”

If we can’t use time dilation to return to the past, does this mean that the past is forever inaccessible? Perhaps not. Einstein proposed that time travel into the past could be achieved through an Einstein-Rosen bridge, a type of wormhole. Wormholes are theoretical areas of spacetime that are warped in a way that connects two distant points in space.

A visualization of a wormhole: The fabric of spacetime curves back upon itself, forming a bridge between two distant locations. Image by Panzi , CC-BY 3.0

Einstein’s equations suggested that this bridge in space could hypothetically connect two points in time instead if it were stable enough. “At the moment, even an Einstein-Rosen bridge cannot [be used to] go back in the past because it doesn’t live long enough – it is not stable,” Matthews explains.

“Even if it was stable, it [requires] other physics, which we don’t have. Hypothetical particles and states of matter that have “exotic” physical properties that would violate known laws of physics, such as a particle having a negative mass. That is why “wormholes” are only science fiction.”

While it would be fascinating to travel back in time to see the dinosaurs or to meet Albert Einstein and show him the reality of time travel, perhaps it is best if the past remains untouched. Travelling to the past invites the possibility of making an alteration that could destroy the future. For example, in Back to the Future , Marty McFly travels to the past and inadvertently prevents his parents from meeting each other, nearly preventing his own existence. But if he had undone his own existence, how could he have travelled back in time in the first place?

Marty’s adventures are a variation of the grandfather paradox: what happens if you go back in time and kill your grandfather before your father is conceived? If you are successful, how is it possible that you’re alive to kill your grandfather in the first place?

A recent study at the University of Queensland may have the answer to this baffling paradox. In this study, the researchers prove mathematically that paradox-free time travel is possible, showing that the universe will self-correct to avoid inconsistencies. If this is true, then even if we could travel back in time, we would never be able to alter events to create a different future.

While these new findings are enlightening, there appears to be more evidence that, although time dilation can allow us to glimpse the future, we will never be able to visit the past. As the late Stephen Hawking said in his book Black Holes and Baby Universes , “The best evidence we have that time travel [into the past] is not possible, and never will be, is that we have not been invaded by hordes of tourists from the future.”

Banner image by Alex Lehner, CC BY 2.0

240 thoughts on “ Time travel is possible, but it’s a one-way ticket ”

How do I go about time travel? what do I need how do I get those required things?

Very large ring magnets and some mathematics and will to see it in reality.

How about a sphere magnet ship…

hoe about 3d time and hemi synch or portals augmented reality,power of suggestion..drugs pcp binural tones frequency amplitude .virtual computing ie.

I’m a time traveling tourist, Stephen Hawking was wrong.

Time is simply a measurement of space under the amount given its mass and the amount of light and dark in which governs its mass in a 4dimensional reality step outside of the force in which permenates its flow one would reside there would be no past present or future there be a fixed permance of a constant here and now and so ok then what is to come.

Very well explained article !!

But I think if physics says time travel can be possible then it’s definitely possible. Considering not to go back to your childhood and fix things but rather can go to the past but as invisible person to them. So that,

No actions by you would impact your future.

Regards, Kirankumar DR

Tell me more

Yes.. I wish I can do this too 🙂

We will understand it better, by and by…

I have a theory for warp speed, but nasa would have to put it to the test…check my Facebook

I am reading for this drive , i am ready , without think my life safe or not

@Ravi chandila English translation please?

Please someone help me I just want to send a message to myself in my past.,to get the love of my life, he never revealed to me his feelings now my life is ruined by the decision of my elders Please help me, it’s question of my life and death. Nazneen

Is time travel machine is their, if the time travel machine is true can it move to the past . To bring back my lost life

That’s the problem you know.. it is not there that’s why we aren’t able to travel time..and yes it it will be built then you will be able to do so…..

damn my life is also lost and broken but still no one can give a time machine for free

DO NOT change the future. That’s why people like you couldn’t go. One wrong person to ruin it for the rest of us

On the point of time reversal, it is evidently impossible. The Uncertainty Principle prohibits spacetime reversal. The Universe is unable to remember its past (as a consequence of the Uncertainty Principle), therefore the Universe cannot reorganise itself.

Can I have to go on my past with another time travel it is a possible when just tell me about one thing that can I have to go in my past one year

we dont need magnets.we need a strong gravitational force to warp spacetime allowing us to travel through with speed of sound or speed of light or faster.we need to learn how to control such force carefully or it could be lethal.gravity slows down time.but it can theoratically work both ways.if we can reverse the gravity’s natural reaction we could speed up a spacecraft faster than light(its all relative(and theoratical))

I WAS ACTUALLY JUST THINKING THE SAME THINFG BEFORE READING YOUR PIECE. VERY WELL EXPLAINED, AND IT DOES MAKE ALOT OF SENSE. WELL DONE.

oh and I forgot to add it can be the key to look into the universe and also travelling time(theoratical).speed and gravity are the key to the universe(theory not proved)

All you really need is a crystal diode with 16 sides, a large pain of glass, and a frequency transmitter near a bathtub full of ice cold water….if you reach the right frequency you can travel through time forward and reverse…

Magnetized metal(VCR Reading Head), to read time out of the Magnetosphere all around earth. The Magnetosphere kills 2 birds with one stone- it protects earth and it records human time:

Mystery solved and I will explain, I was in a coma 3 months and I experienced things, I traveled time forward and backward, it is not a one way ticket. Movies and songs are recorded on magnetic tape in a VCR tape Cartridge or Cassette tape,Â Â Magnetic tape recording works by converting electrical signals into magnetic energy, which imprints a record of the signal onto a moving tape covered in magnetic particles.Â Â 3D life on earth(a movie), and the Magnetosphere all around earth coming from the core of earth(MAGNETIC ACTIVITY) without Atom Made Tape, is like a movie on magnetic Atom made tape in a VCR tape cartridge. Revolution and Rotation is the motor(VCR).

This is why people have those freaky Deji’vuÂ feelings like they have lived this before, BECAUSE YOU HAVE, and how people can be psychic, and how there is Prophecy in the Bible. When a person dies, their Spirit- MIND(Thoughts, Feelings, Urges(Physical and mental personality)) breaks out of human body- a stopped heart is what releases the spirit from the human body. Then the Soul(Life) with the memory of your existence in it breaks out of spirit and goes back to your birthday with a erased memory, meanwhile your spirit goes back in time to when you were a teenager starting the mental puberty, maturity from that adult spirit you died with in last life.In that old movie Star Wars or maybe it was the Empire Strikes Back, there is a scene where Princess LayaÂ plays like a 3D movie, that is EXACTLY how its of life on earth.

Mr Snow, I believe you as I have seen it too. As humans we have deep knowledge of things we cannot rationally explain but you have done a great job here.

I thought that Analogy would be a better and easier way to explain, or in a picture of the earth from far out in space with the atmosphere around it looks like a DVD disk and the earth being the center sticker but is in 3D.

Actually you are on to several things here. I have also had the infusion of knowledge that also had to do with comparing life to recorded movies and music. I know you were using it to explain your theory, but I do think there is something there, I always have. When you watch a movie you are seeing the past. Why canâ€™t you somehow use a recording as a base to go back into? I agree with everything you said here, and itâ€™s worth looking into.

Jeffrey, very interesting idea!! Could be something to that. As far as your coma experiences, I think there are things we just do not understand and are nearly impossible to explain. Perhaps time IS like a video tape, or a DVD? Magnetism is one of the forces of nature. I too have had some odd experiences that suggest that we are able to perceive things beyond our five known senses.

I think if you have had a near death experience, such as being in a coma, then you have experienced the powerful hallucinations provided by the chemical substance DMT which your body creates naturally in times of extreme trauma, but also found in most plants and used recreationally by some who are brave enough and into that kind of thing. Your theory is interesting, but completely unproven and as far as I know untested. If things were so simple, I’m sure many scientists would have already thought of such an idea and tested it.

How do I travel through time

Be alive and live life to the fullest is the best way to travel through time ! OR Befriend grey aliens../ They may hold the key to the sum of all knowledge in the universe..

Sounds good will it work

Really log vaps mil sakte hau h kya

Can you plz explain I didn’t get it

You dont first all you are not experienced in the field of the space time continum and you could you upset the already fragile and multitude of alternate realitys that have looping due irresponsible ones who somehow gotten the technology causing another altered time frame there are a disarray multiple reality which are looping in earths 4dimensonal time frame time traveling is not for a vacation or just to get a joy ride its a serious and complex reality not be joked about it is a real thing and certain individual have are upset the balance of earths original time zone note now the gaurdians of this region of milky way the galatic order of the light keepers Angelic gaurdians of the (names with held)are working over time ooh nice pun (over TIME) ha wow to restore Earth back to a original time continum

Who said I want a joy ride, my life is devastated even my kids are suffering, I want to commit suicide but can’t leave my kids back, Being captive for most of my life, if my life is changed nothing will be disturbed, only thing happens is 3 life’s will be saved. And more so over I don’t want to travel I just want to send a message to myself in my past plz on the date of 30th May 1996. My life is ruined plz help me, it was my dad,brother, sister who pushed me into the dungeon and my husband and his family took over the charge of torturing me. Nazneen

I want to go back in time and tell my 5 year old self to burn the creepy dolls that my mom bought cause there is demons in it at the same time I will kidnap and torture my dad right now go back in time and show the younger version of my dad show him what will happen to his future self if he donâ€™t get rid of those possessed objects and keeps letting my mom buy those antiques Iâ€™m 18 now Iâ€™m single no girlfriend no friend alone nothing very depressed too and I try to remember the positive things that happened in my life which there arenâ€™t many tho but the demons keep squeezing my memory brain and my mom keeps on making so much loud noise including her damn mouth I have attempted to burn the demonic dolls but I only burned them for a minute or two with gas cause I was worried I might accidentally set my whole neighborhood on fire but then my mom threw it all in the recycle instead of the trash so the demons just keep bothering me its driving me nuts he he.

Access to a Quantum Computer Network on the web would be a good start. A series of ChatBots and webhook sites strategically placed in not only space, but in time. A series of algorithms and I think information can be transferred backwards to ones self…

How do we know that there are no horde of tourists among ourselves?

How do we know we’re all not tourists?

We’re all time travelers. We all travel into the future daily. 1 second at a time. Lol…

Agreed! I had the same thought!

Excellent question

If is possible, I would like to go back to: January the 1st 1975 & relive the 70â€™s as I prefer that decade to the awful one I am facing now, Back then We had more police our streets & left our front doors open, Those days were far much more better .

https://3netra.co.in/61-2/

Please do comment on my blog post regarding time travel

how about you ask the flash to help you

I need the time travel so I’m fails so many times i love time travel i have to go fast and future so i have no idea im travel is a my dream so my dream solution plz say me i have time travel so please help me someone please…..

I think you are over reacting

When we look at the stars now it is what they looked like years ago so what if we go to the stars and look down?

You cant go to the stars. It will just take billions and billions of years to go even to the next nearest star than our Sun- proxima centuri. Sorry to say, but do you think that you will be alive all those years??

You can do that without going to the stars… our planet reflects light as well thus making it visible from other parts of the universe…. has the word â€œreflectionâ€ crossed your mind ? 😉

Contact me on my hangout I will help you [email protected]

bro just time travel its not that hard

Please help me to time travel, can I see myself when I go back in time like Harmaini sees herself in Harry potter?? Or can I send messages to myself I know the particular date when to send. It’s not the mistake I had done in my past but it was done by my father and brother who are safe, happy enjoying their lives,my life is totally ruined Please help me. Nazneen

I want to go back in time to save my wife .it was a bad mastake she died .that could be changed i need to go back and save her. Please help me.yours gordon sutcliffe

Would love to hear more how itâ€™s possible, as I am really so desperate to go back in time. I lost my wife 6mons back because of COVID and I will do the impossible things to make it happen.

DMT Experience

what is that?

Dmt experience. Time travel, out of body and sometimes superhuman capabilities.

Jump into a black hole

We have to lose something(the past) to gain something(the future) in time travel.Time cannot be played with.Am I correct.

you need to have d e t e r m i n a t i o n

Time machine is possible

speeder than light LOL

speeder than light cuz if the light break it limits it will move backward in time

Don’t Just don’t disturb the past

I want to go back in time and see my dad. I miss him.

mee too raina I lost my father the day before you posted the comment 18th may, crap it hurts me so much. I would rather die to bring those moments back….

Everything is connected . Time isn’t real .

It is universe we travel to and not a time line in one universe

Ask trump….Mandela effect…. dmt 5th dimension

u need an X-WING starfighter and a lightsaber to fight the knights at past and a R2-B2 to track

The fact that no one has time travelled to the past is the proof that time travelling will NEVER exist.

Others have. Portals open most of the time. Example: Miami Fl. Magnetic Material gets bombarded by the sun. Which fractures and formed portals within that area. Ley lines can lead to the portals of travel within miami for just to start. One can laugh or wonder if. In my experience jumping for the better the word of it (Movie Jumper) can be done. You can either Teleport or Time Travel. Our sun open these portals everyday. The best time when Sun spots start to emerge. All that electrons traveling at light speed is enough to rupture our magnetic fields on Earth. You will return of course. Like water on a lake or an ocean time will corrects itself. Your inner clock is your ticket back home. With a little math,fourth dimensional thinking,a magnetic meter, the right location,history research and luck. You may get to expirence it. First clue….cold spots…it may not be a ghost.

Plz can you help me please help me you can save my life

I wish I could help you, I can sense your sufferings.

You need a bag of hyperlink modules to start, then nuclear beepbeep gatangas, when you have that come back here and I will tell you what you need next.

You need high voltage beepbeep gatangas and a large broonasic magnet of about 450 Gauss, come back here when you have these and I will tell you the rest.

you need an old fashioned police box

If you rotate the center of the earth in the opposite direction, then the whole earth can be moved back in time, on the other hand, if you move the center of the earth and change its position by separating it from the part of the earth, then you will be able to time correctly. Let’s reach the other side.

How I could time travel any time travel machines inverted

give audition in the flash series..

I think that to go back in time you’d to travel faster than the speed of light since time stops at the speed of light but if you wanted to go back to say mlk’s assassination you would need to go at least 10 times the speed of light

You don’t want to, the moment you wrote that message is a historical point in time.

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It’s Close I can feel it

Yes it becomes a history but my life also in the past changes and the present also with it. The way I’m suffering from the pain and want to end my life I’m 100% sure at least sure no one around me is or was as hopeless and horrible as my hubby I’m devastated I really want to send a message to my past it may not start but it will definitely change. I was forced, not given any option, my father and brother gave me wrong information and had no concerns for me. It was just survival for me. I repent for not killing myself when I had time, but now if I have a chance why not. Now when I’m out of my marriage I come to know a guy then had feelings for me, was madly in love and wanted to ask for my hand, now I want to inform my self and change everything plz help me.

I too would like to go back in time. I just wish he lived a happy eternal life. I would just like to repeat to come back in 2020.

I heard from a guy in Idaho that time travel is possible. You’ll need to go online and purchase a pogo stick looking device and make sure not to forget the crystals.

I think u need a black-hole-proof spaceship, go to the centre, escape the black hole and viola! You are now in the past. If you can’t escape, then you’d travel to a time where that black hole didn’t exist.

Believe me you time travel! If not physically then you do mentally,like you through dreams.

Though they sale it online, it would not take the chance. It is as simple as beating the speed of light and having some system to send you to the time you want. Time however is not real, and were just traving universes. It will all be in the open in 2028 according to other travelers.

All you need base on how to travel to time is very simple but had to find firstly find a way to get to space through a space rocket secondly find a very perfect consifigration for traveling to tiTme then find a very fast rocket that could create a form of force reaction in space in order yo enable fast speed in space for the break through of non gravity in space and make sure that while doing all you activities is not far away from planet and not also to close to planet earth and make sure that you are with wristwatchs whose time is set disame then you can to the future

Man you can get all you need for too build a time machine in your local store man, man I sure wished Iâ€™d kept mine but it frightened the heck off me man, sometimes when I fart I find a grape in my pants

time travel is a fake, baseless and delusional idea. If you believe in that crap then tell us if we are living in the future or in the past. To travel backward the entire system has to return all along with nature and events, it won’t be for you alone except time travel only happens in the mind.

you would need to get about 1,000,000 pounds of silicon and then somehow conduct enough energy to make 500 cars run without an engine and then go to a nuqular power plant and somehow make a portal. but the whole world could go out of orbit if you do that so I wouldent sugest it.

Time machine is good and bad because,with the time machine you will know about your future which is not good.

Is time travel actually a real thing because if it is then I need it because I am trying to go back in time to fix all of my mistakes

So what if time travel is the reason that we now believe there are other realities in our own world.this could be that a Time traveler we could only go back and couldn’t come back, and on doing so if you do something to change the past in stead make a new reality.making other things are deferent and ours realty stays the same . sometimes reality gets mixed up make the mandela effect that we see today

Time in the future it is faster then now. The past is slower so you can travel . It is up to you. One way is to meditate. You can travel and see any body you want right now. You can fly faster then light. That is one way. You go to the future. To go to the past you sleep for a long time. Some time you go to the future or the past. Your heart well stop and your body gets cold. Sometimes you can control it sometimes you can’t.

but how do we know that is really true ? i mean i want to figure this out, i want to time travel, but how is it that simple ? so many people have been trying to figure this out for many years and its that simple ?

Yeah what if you get stuck in there what do you do than

You cant go there in the first place. Dont worry. With current technology, we will only end up messing some few microseconds. Highly doubtful, if we can end up getting the news of travelling hundreds of years in our lifetime.

wait what would happen if someone saw you while you where in past/future i’m curious

Time is an illusion based on perceived reality and is only relative to our limitations. Time isnâ€™t what it seems and all things canâ€™t be figured out

Im on a school computer looking this up and i found this article and scrolling trough it and ive not heard one statement here as good as yours bro

This is blowing my mind people, then I see the school boy on the post. Great stuff, whoever reads this is already capable of travelling through time. Think about all people who have posted on this thread, now think about who will read mine. Now think of those â‚¬opposite trolls $ who never ever bother posting on you tube thread etc. But ONE comment from one of the time travellers who wrote on this thread. So that opposite troll is me,I donâ€™t normally post.however because of previous comments Iâ€™m posting here. And I love the DMT shit I loved that and lived that one out in real life,,,,another day.

So my point is ifOne or two threads have made me write this….then what will my post make others write , think…..then I could travel back and not write this…. then what. Love the conception of time how can u travel something that doesnâ€™t YOU perceive to be time, like a train can only run on its train tracks, a car can only drive on a road etc Itâ€™s posibble I know it is. Sometimes when u have fun times moves swift but locked in jail it goes snail pace. U c me. I write letters to myself from past from future. Remember everything that happens in present becomes part the past. But the future is what you hold in your hands. Question is, now you know….what the f are u gonna do about it?.. 01/04 ==== 21

Hahahah only realised school boy is named BIG dick pissing myself laughing I gotta go pee. Respect certified

so not halal mode

True so were not traveling in time. It is just different universe (on what we call) different time, day, tears, etc.

You would be scared for life

you will desepear

Maybe it has happened before and we just don’t know that they’re from the future. If people in the future time traveled, the would know that it’s dangerous to mess with the past and would pretend to be part of the past.

I believe time travel is already possible, however we cannot fix past mistakes without altering future predicaments. Say we stop JFK’s assasination, that would completely change the future from that point forward to one none of us can know/guess or conclude the effects? Other time travel purposes go to the future I think that from now our world will die off before 2096 basdd on overpopulation, global warming & polution as such creating islands of plastic waste in our oceans. The best thing my opinion go back to the garden of Eden, kill that Serpent Satan before he tricks Eve into the forbidden fruit. Then let God raise, enlighten & teach us how to be humanly sustainable on his planet & I guarantee technology & smart phones? Ain’t no part of it!!

Time travel possible but one n only theory of Stephen hawking

How it is possible to jump in time …??

Many ways. The most used is creating a black hole which can be done in a few ways. 1) traveling forwards or backwords faster than the speed of light 2) been known during heavy lightning strikes. Each way is a fast movement that opens the black hole. It has been done by the Government since the 1980s though they claimed they never beet the speed of light until 2002. However, Time is a illusion and their for we are actually traveling different universe that are differnt than ours even if the difference is by 1 thing. Each universe may have (what we call) different time, days and years. And each time we change that time line we created a new one. It is belief as CERN has said they destroy 5 universe, that they can travel to them. Since 2012 it has seem we been shifting and is now belief they have possibly came together. The event is known as The Mandela Effect.

No one has the right theory in my thinking. Only a few things are wrong. It is universes with (what we call) different time, days and years we are traveling to and not time itself as it is a illusion. Their is no stop to how much we can do, or where we can go. No limit as such say.

There is no God. No magical serpent or Garden of Eden ever existed. Basing a scientific theory on archaic stories does no one any good.

You choose a hopeless eternity. I choose hope through the promise of salvation through Christ for those who believe. You see, I have child in heaven. Thankfully, have a hopeful reality that I can embrace. There is a God. Our known universe is only 14 or so billion years old… is it mathematically possible that random molecules out of the Big Bang mixed in just the right way from to form a complex cellular organism… with DNA… and result in humans and such diversity of life forms? Itâ€™s naive to accept this as a result of chance. Think about it. How is that remotely possible without a creator?

Hahaha. You make it seem as tho the big bang happened, and we just popped into existence? Naw it’s called evolution baby, we started out as microscopic organisms, seriously, when did you drop out of school? But that’s like saying a some guy writes a book to explain away natural phenomenons that they were to stupid (un-evolved) to grasp and the concept good and bad and the eternal damnation, And thus, the Bible, and boom, everyone now was made by God, hahaha. When you can prove he/she exists, and that the Bible was a autobiography, and not just some twisted piece of Fiction, that has no real basis in reality, and cannot be proved to be more that a work of Fiction. Rather than being used as the16th Century control tact, ‘be good or you’ll go to hell’. But I guess that’s what they mean when they say ignorance is bliss, (maybe if I was as ignorant as y’all believers I’d believe to). But I can’t see how a ‘GOD’ would ever ask one of its creations to kill another.. Genocide, Crusades, all the ethnic cleansing.. All In the name of God Almighty! Hahahahahhaaa. Aliens are more believable than this shit, and theirs no proof they exist either. Hahahahaha. Fug’n Bible thumpers. ‘Step out side your faith and see the world for what it really is, a complex organism, mad of gravity and dust, quite a unique specimen! And we, yes Bible bangers, this includes you, are destroying it like the bubonic plague.’. ‘The end is coming and it’s our fault’

Have you taken the time to read The Old Testament and the prophecies therein that came to be ?.

How do you explain that ?.

My last post should read GS not G

You have not had an encounter yet with God. Don’t be so certain on yuour theory of evolution. He came and shook my reality to it’s core. Made thing possibly that no one could ever explain.

What are you talking about? Ur so wrong and funny in every way.

BlissfullyInformed just told me his comment was all an April fools prank. He believes in Jesus and was just fooling.

Time travel is very much possible just as you decided to come existence in this century meaning one can decide to be in another time zone . life is all about numbers, you just have to work on numbers

I’m pretty sure ppl don’t decide to come into existence. If that were true I wouldn’t be replying to your comment.

Un like your other reply, I understand what you mean. Each timeline (or universe as some see it) can easily be traveled to at will. No different than traveling threw your time you want to visit.

Science has proven a few things from the Bible is true. God does exist. Christians are confused with time and what it says. For a example. God created the world, as science even belives it was God who created the big bang, yet the bang has happen itself creating the moon, planets and stars. Christians also fail to understand chapter 1 and 2 of gen. spoke of two different creations which can be why we see dinosaurs before humans as chapter 1 spoke of animals first and humans 2nd. Their also was different time than, as without the moon a full day is 6 hours. It would take 4 days back than to equal are 1 day. Time is lost and Christians are just confuse on that time. That does not proof their is no God. As they have already found the robes of Jesus and remains of Noah’s ark, it proves much did happen. The bible only has less than 50% of what was written.

Changing the past is impossible, because if we went back into the past, that means we were already there during the time you experienced it.

We all know how to get into time travel but how do we get out……..

You don’t need time travel – all you need is life. And what is life? Life is the evolution of the impossible into the inevitable over an infinite amount of time.

if it is shown that if something, such as a solution to a particular class of equations, were possible, then two mutually contradictory things would be true, such as a number being both even and odd. The contradiction implies that the original premise is impossible.

This is called proof by impossibility. Thus if some traveled back in time far enough to kill his grandfather, we have the contradiction and therefore it is impossible.

You could argue that he would be able to time travel, but not kill his grandfather. However almost anything a person does going back in time would cause the same contradiction, thererfore it is the traveling back in time that is impossible.

Actually, it probably is possible to travel back in time, however to do so, you would also have to travel so far in space that you cannot see anything that happened before your current time due to the speed of light, because this to could affect the future.

The reason I am here is that, i really want to go back the day when our matriculation exam was just finished. Everything around me is peaceful and happy. Currently, I am living in dire situation. People are dying outside on the streets. Smokes everywhere. Everything is in doom. Ah, yeah. I really miss my past. If you are reading this, you can judge me in anyways. I just want to live peacefully and happily.

You must live in Portland

I entirely know what you say and how you feel, Robin. I am totally convinced that future is no promise to offer a better place to live. World is becoming unnecessarily more complex and more horrible and more insecure. Therefore, travelling back in time to a point where things were still far away from such ordeals is what I aspire. But I think if it is possible to travel back in time without the possibility of carrying our lived experiences with us, it will be useless as we will be repeating the same mistakes over and over again. Now, this begs the questions “in what type of physique could we imagine ourselves back there if such time travel becomes possible? That is, becoming younger again in a physical regression (as I said this would be a torture without having learned from all these later years)? Or appearing at our desired times in our present physique and age? I believe the most ideal one would be if we appeared at our desired point in time at the same age that we were at that point of time with a good feeling of our later lived experiences.

Mam all u need to do is just run faster as much as u can or visit the black hole because in both condition time just slow it down ….

Time travel is simple. If you do happen to travel to the past you create a new time line not affecting the time line you left. In essence you going to the past is now your future. Even if you were able to return you may never know if you remained in your time-line or created a new one. So even if you changed something in your travels it would happen in the future not the past.

Sorry time traveling is not possible, there is no way you can go into the past or the future â€â™‚ï¸. You can only be in the time you are already in.

Incorrect. General relativity allows time travel into the future. You need a space ship that can travel extremely fast though, approaching the speed of light, or you need to get close to a supermassive black hole.

It is travel into the past that there is no known practical way to do, and is probably impossible.

So what happens when we Die? Where do we go? I want to go back in time so I can meet my childhood friends…

Simple question from a simple mind:

At what point, when a person says they are from the future, do we stop throwing them in the funny farm and actually start listening??

When they show actual proof. Not just some random prediction of the future.

I don’t believe that “glimpses into the future” could be possible. If it were so, we could glimpse blueprints of the future that we could bring back to the present and build before they were invented. My personal.beleif is in any time frame there is only one active time which is the present. The past no longer exists and the future hasn’t occurred yet, so there is no such thing as ‘time travel’ except for the frame we are in now.

First off time is not real we make time if you travel anywhere all you are doing is beating the Earth speed try this for a mathematical equation the Earth travels a thousand miles per hour you’re not beating human time that is your own equation the Earth travels a thousand miles per hour a space shuttle travel 17,000 mph you can beat time that you made so time is not real you are only beating the Earth speed if you go in a space shuttle and go around the earth 17,000 miles per hour the Earth only travels a thousand miles per hour plus it has all types of gravitational pull from the Moon Earth’s access on the til t you figure out the mathematical equation I cannot time travel is real if you can beat the Earth speed and we can it has nothing to do with its 12:00 it’s 1:00 that’s not real time is made up as a mathematical equation you can beat the Earth speed you can go back into the Earth’s time in a space shuttle but you’re not beating anything except the Earth’s speed think about that one time is not real at all all it is is a mathematical equation think about that one real long

What I’m trying to say is this a space shuttle travel 17,000 mph the Earth travels a thousand you beat it 16 times faster that’s all you did you’re not beating any time you’re not beating 1:00 you’re not beating 3:00 all you’re doing is beating the Earth’s time you can go in reverse around the Earth 17,000 mph okay you can go forward with the Earth’s centrifugal force 17,000 miles per hour you’re not beating anything you’re beating a mathematically equation that we we created astronauts been traveling time for instance for years and haven’t told us because of the space shuttle that does travel 17,000 mph it beats the Earth speed 16 times a boggles my mind you have the Earth access the moon gravitational pull but you can get in a space shuttle and travel 17,000 miles per hour and beat the Earth’s speed 17 times think about it

If any scientist or anybody can actually answer this question how do you set up this equation with the Earth spinning a thousand miles per hour you have the moon pulling gravity the Earth’s access on until I want to know tell me then wondering for a while this equation popped into my head about 2 years ago I’m not a math whiz or anything I just thought about it weird how the mind works I’m not into space or any space stuff at all I’m Samanthas boy friend John antos wrote this

I liked your post and the knowledge you given. I also written a post on Time Travel.

how would any of that stuff be true because e’*34+Em would stop all the forss of vissecs and how would we do it if you now what i mean??? also thanks for the scuff for my project

I would love it if I had a real life time machine here with me now which could take me to anytime I want, the past, present or future. If I had a time machine here with me now, I would go to the past in September 2004 when I was born and give myself to another family that is actually rich and not this horrible family that I have now.

that not nice

Close but not quite right scientists of the idiotic variety, yes, you don’t want people to travel back in time to mess with their own pasts, of course, but you say it’s impossible, but it’s not, and I’m always ignored with my crazed crackpot theories, so what’s the harm in telling the truth as I see it, while it could be possible to travel to the past, here in lies the problem with rewriting the future, while some believe it’s possible to travel back in time, but it’s very expensive and definitely a one-way trip to the future or to the past. Basically Doc Brown got the mechanism for time travel almost right but the energy out put needs to be quadrupled instead, allowing for the ‘physical item, being or vehicle’ to transport through time without killing the time traveler in question. Wormholes are unpredictable, until warp speed for spaceships are a thing, it is not possible for the space ships to achieve time travel, unless they want to enter a black hole, which I would not recommend. as you need warp speed to survive the emptiness of the black hole, without being ripped to shreds. Say for example, Back to the future 1, the timeline doesn’t erase it continues on without the ‘said time traveler’ in existence basically the Marty from Wimpy George’s timeline did time travel to the past and messed with his parent’s meeting so to speak, but never return to the same timeline therefore Marty A went known as a Missing Child in timeline A, while it continues on without him, however Marty A became Marty B/C, in the Successful George Timeline. So that is what I’m talking about. the timeline changes only for the time traveler themselves the ones who are left behind don’t experience a thing of timeline rewritten-ism, as it would never happen in the first place. The other thing is if you want to mess with your own childhood, to make a better life for the past self, the key thing to remember it’s not really you. It’s an alternative version of you, that you interfered with. creating a parallel timeline to it’s original, yet slightly different. Yes it would be awkward to raise yourself. but as long as you are staying in the past, nothing should happen until the age you traveled back in time, unless of course you touched your past self and suddenly de-aged and merged with your past self, is an option 1, option 2 the future self explodes spreading guts all over the place and therefore the past self, of you became a murderer of your future self, I am more inclined to believe option 1 as option 2 seems a little too out there. Basically you would have two memories one of the former timeline and one of the current different timeline. Still traveling through time is truly a one way trip and if you want to travel through time, you would need some time travel mechanism, the way you scientist talk is basically a dream version, or an OBE version (OUT-OF-BODY-EXPERIENCE) which is basically a vivid/lucid dream which is not true time travel, the true time travel is based on the BTTF Trilogy not the idiotic versions you preach about. I believe I’ve said enough.

Mystery solved and I will explain, I was in a coma 3 months and I experienced things, I traveled time forward and backward, it is not a one way ticket. Movies and songs are recorded on magnetic tape in a VCR tape Cartridge or Cassette tape, Magnetic tape recording works by converting electrical signals into magnetic energy, which imprints a record of the signal onto a moving tape covered in magnetic particles. 3D life on earth(a movie), and the Magnetosphere all around earth coming from the core of earth(MAGNETIC ACTIVITY) without Atom Made Tape, is like a movie on magnetic Atom made tape in a VCR tape cartridge. Revolution and Rotation is the motor(VCR).

This is why people have those freaky Dejiâ€™vu feelings like they have lived this before, BECAUSE YOU HAVE, and how people can be psychic, and how there is Prophecy in the Bible. When a person dies, their Spirit- MIND(Thoughts, Feelings, Urges(Physical and mental personality)) breaks out of human body- a stopped heart is what releases the spirit from the human body. Then the Soul(Life) with the memory of your existence in it breaks out of spirit and goes back to your birthday with a erased memory, meanwhile your spirit goes back in time to when you were a teenager starting the mental puberty, maturity from that adult spirit you died with in last life.In that old movie Star Wars or maybe it was the Empire Strikes Back, there is a scene where Princess Laya plays like a 3D movie, that is EXACTLY how its of life on earth.

If only wish I could undo everything what I’ve done wrong in the past, I’d be more happier

And that my friend is absolutely what you do not or would not know. Everyone focuses on what they don’t or haven’t had rather than what positives they do have around them. To change the ingredients of a past life only changes the flavour you have in this life, it does not make you happier.

No, travel to the future is not possible. Like, future is unpredictable and always have been so give up on that field

Already has been, and has been proven.

Time travel is not so possible for every one , but there are already time travelers on earth #@*

Who are these time travelers?

Depends if it is the Governments (they done it since the 80s), or if it was a Accidental travel, or a simple us creating our own machine. Either way, one can easily find storys, and other evidence with a good research. I have a website that shows the effects of change cause by time travel.

They are out their (done by the government since the 80s) but the future is open with time travel (told its open since 2028) so they travel back much.

Time travel 101-

Create a closed loop circuit around a full metal structure, hermetically seal it and bring O2, Use two tesla coils to create north and south poles. (Artificial Magneto sphere.) Make sure to pain the outside in lead to prevent any cosmic rays from penetrating the materials on the inside. (Radiation = bad). Connect a ball made of w/e with wires that alternate the current from the coils to w/e panel on the outside of the structure to make it move via inductive magnetic / electric Lorentzo (Lorentzo = ExMfield = Velocity. = Antigravity) Create Antigravity by using forces from the inside reactor. (Pressurized Mercury, and Tesla Turbine.) Then Move 10-100x faster than light depending on the charged field, Friction will be added to the electric field instead of the craft allowing the G-forces not to crush you inside. The field will take the pressures of outer space, The temperature of space will allow for super conductivity of the structure.

Eventually you will arrive in the future, if you stay in one place. but account for the movement of earth in your travel log. To see outside you will need a monitor / camera system, as any leaks through a viewing area will cause death by radiation from the cosmic rays from the field you have created.

The O2 can be used as a backup generator, through air pressure and the tesla turbine.

There are many different ways to make wormholes, but the curvature of space is really hard to calculate to send a machine far out to the end and create a link with the machine that wants to travel there. And leaving one behind to get back.

If you can imagine it, it can be done. You just need the knowledge of not dying to complete it.

U.S.S. Tourist, You’re a time traveler or just insanely smart.

You don’t need to go the speed of light. Human Time is recorded in the magnetospere as a movie is record, ed on magnet VCR Tape or a song on a record. A VCR or record does not have to go light speed to retrieve the recorded info. All of life is recorded in 3D by our Magnetosphere. My Analogy is imagine a VCR tape cartridge being the earth, imagine life on earth being the movie but in 3D with out adom made tape, imagine Rotation and Revolution of Earth being the VCR putting all in to motion- playing. That is how its done, the magnetosphere kills two birds with one stone, it protects earth and records time, human time is in a magnetic bubble that is why the Bible refers our time is different from gods time and this is how God the maker(PLANET OF UNITED SUPREME BEINGS) can flip through our time to know everything. By the way long before life on earth, he built the original 7 wonders of world(Pyramids) to Pump the Seven gasses into the atmosphere of this planet found in the goldilocks zone, so Life can live on it, and that life of all types is his technological cyborgs that grow and multiply on earth also he seeded it with plant, trees, sea creature and things that fly,. Anyway that above is how time is recorded.

Until recently, I thought my neighbor was a crackpot until he actually invented a time machine. He utilized an ordinary closet, and showed me the sophisticated (to me) instrumentation he had installed. I was very skeptical at first, until he offered a small demonstration and entered the time coordinates and energized his invention. To my amazement, when I opened the door, the clock on the wall was 30 minutes later than when we stepped into the machine. OMG!!! Destroy this thing before it destroys us!!!.

So happy to have my husband back after 6 months of separation. get any kind of relationship/marriage help you want from….Robinsonbuckler11 @gmail com………………………

I find it odd that people say time travel isn’t possible yet… If time travel is possible, it has always existed. Meaning, there is not past present it future, only our perception of time. What we know as past present and future have always been occurring simultaneously, so travel was invited the moment the universe wss formed. Dinosaurs are roaming the earth right now, and forever. A version of me is typing this and has always been typing this, within this perceived moment of “time” and time travel has always happened, whether or not we exist in that reality at the right “time” to observe time travel is the only question.

I find it odd that people say time travel isn’t possible yet… If time travel is possible, it has always existed. Meaning, there is no past present or future, only our perception of time. What we know as past present and future have always been occurring simultaneously, so travel was invited the moment the universe was formed. Dinosaurs are roaming the earth right now, and forever. A version of me is typing this has always been typing this, within this perceived moment of “time” and time travel has always happened, whether or not we exist in that reality at the right “time” to observe time travel is the only question.

Their had to be one point however, when it was created and started, and for that, there was nothing but the current time. Once it was created, than we had a pass, present and future to which we can go back to millions of years to see Adam and Eve with the dinosaurs or go millions of years in the future. However, given the events that changes, each time a new time line has been created. We also have destroyed the planet and repopulated many times in the last million years. Each event changed, or something we do different (without traveling) enters a new universe where some things may be different or the same. Today are universe are shifting a lot.

To be fair, even if it is a one way trip into the past, that doesn’t stop machines going back. We could send a machine back and order it to do anything we want and then tell it to meet us at a certain time in the future. We send it back, then go straight to the meeting point we agreed and then we’ll be able to prove if it worked or not.

I’m a girl who has read a book about seeing future through a box. So is it actually possible?

Time travel has been done on purpose by the Government since the late 1980s. From research, the mostly use kids, or future Presidents. Their are some cases where people have been struck by lightning or came across some tragically event that cause them to leave their timeline either forward or behind in time. The Mandela Effect is the current cause of how things go wrong when time travel is not done right. Click on my name to see the website.

Even as traveling to a location as a future or pass date is possible as what people here mean. However, as you said, it is numbers. Time is a illusion and we do not travel threw time, just universe that are different than ours. What we call time dates and months is what changes each universe. We are all from different universes today as they came together. The mandela effect is a fine example.

thx to eleon wont we soon be able to digitize our conscious being, then accelerate that data pass the speed of light some how then download it into some android or something…..i dunno…..just a thought

I want to go to my elementary school again. Someone help me out, I know its Idiotic but stil.. I am not good at science. As far I understood, 1) we can trace through time if we travel fast than speed of light.. I think memory os the only thing that is faster than light, Yeah I can go to Paris within 1 sec in my memory but yeah its illustion, i want in real 2) Through Blackhole – I think its Bermuda triangle

if you travel back in time you will still be your age now. That is how it worked with others. No one gets younger otherwise traveling to far back would kill you. No school would let you return to school as a adult so not possible.

Plz help me I just want to send a message to myself in my past and save my self from a beast plz help Nazneen

Would love to experience many moments in life again for the first time again!

I think that time traveling should be left alone, for the sake of humanity. There are some things we’re not ready for yet.

Well stephen hawking may be wrong. I mean, the study proved that the universe self corrects itself to prevent inaccuracies. So maybe tourists from past do visit us but we don’t remember them as the universe alters our memory. If you guys have read about Butterfly Effect, a simple mistake today may grow through years to become a giant disaster in future so if you think of it, oncoming tourists from future may cause giant inaccuracies. Imagine this, You have travelled to past. You brought two cakes for yourself, so you pay the shopkeeper 20$. The shopkeeper invests the 20$ in stocks, strikes gold there and becomes a rich businessman.His daughter goes to Cambridge and marries someone else than the person she was supposed to marry according to time. Can you imagine the magnitude of inaccuracy after 100 years? Therefore, whatever the tourists from future do, is corrected by the universe and we don’t remember it. Creepy, but food for thought.It also adds a special meaning to the word ‘Fate’.

How much wacky terbacky (i.e. weed) you be smokin’ JOE JOE?

Hmmmm…. As brilliant of a mind as Stephen Hawkins was, how is he so sure that he would even recognize hordes of tourists from the future? Almost everyone is aware of the warning of the Butterfly Effect. So I’m sure any future visitors Intelligent enough for Past-Time travel would be amply attuned to this.

Most future people coming to the pass (our time) seems careless and not intelligent. Most are taking FBI lie detector test and telling us what is happening in the future. That is a bad idea, because if you tell us (example) who is the next President, and the Government does not like the person they than can change that event to let someone else in (as seen in 2020) One should never acknowledge who he or she is or why they are their. Most traveling is to get knowing of the pass or to pick up certain things. Since are pass is changing, events are changing and are timelines are messed up, someone made a mistake. The Mandela Effect is a fine example.

Wow that’s great plz help me go to my past plz,I can’t do it by my own at least help me send a msg to myself in my past Nazneen

I think it is possible, but time traveling is really just changing universe created by different time lines. Our whole solar system is in a whole different place now and Earth is much smaller in this universe from the one I grew up end. Someone has already changed the timeline.

Roads? Where we’re going, you don’t need roads!

Youre wrong about your measurement of speed for traveling, in order for time to slow down, with inside an object compared to outside. Scientists proved that time with inside an object at an excelorated speed actually appeared to have slown down during the duration of time for the test. The speed was far less then the terminal speed of a rocket for NASA at 256,000 kms p/h.

In to the volicity of space. Generating a vacuum of space, could be no different the the actual transport of matter over frequency where in fact matter can be carried by sound. It is believed that an alien civilization harnessed this energy in the form of bolisks that where believed to carry the same properities and in consideration of harmonic resinance, the simularities could be used in order to carry large weight. In accordance with a documentry on theoretical science.

However the properties, present the fact that a working property controdicts your counter intuative theory of gravitational deceloration of matter to colide within itself to absorb all things into non existance as to the transfer of matter into energy, rather then your idiolisms of transfer between dimentional space to another destination that is not linked or the transfer between time that isnt, either.

However to reproduce the fabric of time within space in a practical measurement as I have mentioned, would put an end to all the lunacy of an unmeasureable field, which people fail to identify. Like running into a glass window. Only to not know what forcefield is present.

Time travel into the past can be achieved simply going faster than the speed of light.

The closer you get to the speed of light the slower time goes

If you reach the speed of light time stops

If you go faster than the speed of light it starts to reverse

Why does no one seem to know this?

Christopher Reeves did this in Superman 3 brah.

Any time travel, pass and future, is by going faster than the speed of light. It is said by reversing that that you can go back in time. However, I assume since the Government has done this since the 80s they have better ways (maybe tying in a date) and not having to go to a unknown date.

I want to send a message to myself in the past on a particular date plz can you help me, this means a lot lot lot to me,plz help me Nazneen

Why don’t we drop the declaratory statements that it “is or isn’t possible!” Until someone actually does so. Just say “maybe”.

People have and their are records both to the pass and future. The Government has done it since the 80s as part of the “star wars project” and are much better at it today. This explains the black holes in the sky of 2019, and the CERN destroying 5 parallel universes in 2013. We also see changes because of time travel events changing time. The Mandela Effect is a find example.

I want to send a msg to myself and my family in the past ,is it possible plz help me my life will be saved one who helps me saves me and my kids from a pack of beasts,

The worst idea ever. We all want to do this and where does it stop. A lottery win does not sound bad if you knew the actual location, time and place. After a while though, would you not want to write that hit song, become the author of the Harry Potter books, stop 9/11? The idea of giving your pass self (a time time travel was not proven) information of the future could change things in a major way. This would cause one small thing to change creating many others to change. This has already happen in simple ways of the The Berenstein Bears changing to The Berenstain Bears. This is a small event but this event “The Mandela Effect” now has over 3,000 changes.

What if you decided to give your pass self information about a lottery ticket that would be a winner, bought late at night and he was hit by a car on the way to get it. Changes the whole future. However, If detailed right, done right, with no large changes, it may not effect much, but to know your being given info from yourself in a future time (when that was not known much or provrn back than) You would either assume it is a joke or you gone crazy.

I don’t want to win a lottery, my decision about my career and studying was right but my family and their cruelty has put me into this worst condition I just want to go back complete my studies and live a life like a human not like a animal or slave,help me plz Nazneen

Can someone take me to 2013? i can pay later to all of you in bitcoins so its a win win and you dont need to do anything, just wait

LOL but still complicating on my side

You travel in your dreams where time and space colloids ..That’s y sometimes the dream which you dreamt might be a 10 mins reel time but you felt dreaming whole time like 6 to 8hrs .. Probably even traveling to parallel universe

I agree. Dreams as we know it is not a simple sleep. The part of the brain we do not use while awake, we use at night. This is the phenomenon part of the brain that can do thing we feel a human can not do. We of course use less than 30% of our brain. By the use of 100% of the brain we would use both sides and be able to do common things such as read thoughts, move things without touching them etc. The idea of using this side of the brain, would be the theory we can leave our bodies and visit different universe, see what could of happen shall we done something different, and even see future events. This may be why we notice different memories to some things as we could of held some from another reality.

It would be very weird, however, if we were trapped in that universe, or another body and fail to return to ours. Is that how people die in their sleep?

i just fell like going to late 70’s, where i can see majority of family.. i am willing to trade life for it…..

Time travel to the pass is just as common as the future. However, as both has been done it is NOT travel threw time. Time is a illusion we created. We are actually traveling threw different universe with (what we call) different time, dates, years, etc. The Mandela Effect is a find example how traveling threw different reality’s change the time lines.

As a add on to the above, Time travel is not a theory, has been proven, and has been done by the Government since the 1980s. Their is many residue in our history to even show some time travel storys to be real.

Where can one get a reverse watch, is it really possible to go back in past with its help, is it sooo easy ,plz help me ??????? Nazneen

US20060073976A1- search this patent number,this describes the process for time travelling,I really don’t think magnetic energy will work,maybe heat focused on a specific point could expand the fabric of space and make a hole in it.even then I will the hole take you to another time.it would be one thing to time travel but selecting a point in time would be impossible.you could only travel to the time you device was built?

Is there a watch which back travels in time or reverse time watch? Is it true? How to get one? But with that how can I send a message to myself in my past, plz help Nazneen

I don’t believe such a watch exist and their are plenty of smart minds with huge funds trying to travel.right now there are only theories.

Thank you very much for your response. I just want to send a message to myself in my past. Nothing much will be changed but 3 literally dying devastating lives will be saved. We are suffering for the mistakes and egoistic arrogance of others so if possible plz help me

Traveling back in time isn’t just a when problem, it’s a *where* problem. Where was the place you’re standing right now a thousand years ago, or a thousandth of a second ago? There is no useful answer to those questions, so there’s nowhere to travel back in time to.

Traveling forward in time? You’re doing it now.

when you step through a door is time lost when you come back through? lets say you return days Later how much time did you loose. what exactly is Time,.? is dialation a safe way to return ,. a Blackhole will assist you in in travel, the question is will you arrive safe,.

Traveling back in time is impossible. 2 reasons why that are never taken into account.

A) The stuff you are made of ( subatomic material) is being used by something else. It I not like you are a facsimile of the already existing material. What you are made of is exactly the same existing material. The problem is exact stuff can not exist in 2 different places in the same point in time. You will either : Decompile or fall out of phase with the universe. Both bad outcomes for the time traveler.

B) Lets look at it from logical commonsense. You have a bar of gold . You intend to send the bar back 1 second in time. Now you have 2 bars of gold . You send those 2 bars back one second . You have 4 bars …… do that 50 times . You have over 900 trillion bars of gold. All made of the exact subatomic particles. The more the bars back the more the existing mass of the universe increase. What are the consequences of changing the mass of the universe . Hence the paradox . Information can not be destroyed., It also can not be created.

At least this is the way my brain perceives going back in time.

Time is a function of change. None of the 4 forces The strong force , The weak force , Electromagnetism and Gravity can not work without time.

I will figure out time travel one day but only for the past.

I wish I could travel back to 18th of June to save my mom.

Is time travel really a one way ticket? Theoretically, if you can go one way, you should be able to go back.

Time is not one way. It’s consequences are however irreparable given certain circumstances and is not something that should be taken lightly or thought of in a manner of disregard. I’ve only very recently decided to take to your social platforms regarding space and time.

You can try finding me on Instagram. I’m not familiar with these platforms to better direct you there. My Instagram name is johnrvh

On Twitter it seems to be @_JohnRvH

If I go forward I will have to pay extra bills and taxes. I donâ€™t think I can afford it.

You’re the first person I’ve come across in this timeline that has a sense of humor. Thankfully, going forward is not possible if that future hasn’t been created yet.

timetraval is no joke if its created the whole universe could go out of orbit.

Cauchy problem converging to non minimal terraces as t â†’ +âˆž

Stephen Hawking may he rest in peace a genius but not all knowing. As far as he knows we haven’t been flocked by tourists, in the same maybe these UFO sightings are actually time travelers from the future coming to the past to view how we really lived why things really happened the way they did, etc. To limit the imagination of possible and impossible is wrong then you create fantasy. And we have learned from history that there is truth in fantasy. I.e. the different mythos of the different ancient cultures from around the world including those of the Norse. Improbable and probable should be more appropriate. It’s possible because it can be imagined improbable die to the right math or this or that not existing or matching up. I also believe that if time travel to the past were possible that the changing of something in the past would create a new timeline running current with your timeline at which will inevitably collide and will cause the collapse of the universe at which point a new universe will be born.

so i think the speed of light is only relative to deciding a point of destination -initially- as specific gravity of destination needs to be ascertained to calculate the frequency needed to run an alcubierre-white engine to bend space correctly to cross space ‘quickly’, the point of reference may well be jupiter in our solar system for the fact of the moons that orbit it, i surmise that by using a ‘dead end ‘ equation that usually puts notable mathematicians into the outer regions by trying to solve it may actually be the key as calculations end in a loop of 4-2-1 ie 3N+1; this process of calculation creates a sine wave over time/distance relative to specific gravity of chosen destination – as time is determined by gravity therefore if the speed of light to a destination can be used to ascertain the specific gravity of a ‘body’ to visit ie a star or sun due to receivable resonant frequencies emitted by the body, then the constrictions of the speed of light do not exist other than to give a constant, by using the 3N+1 method of calculation ,once the speed of light and returning resonant frequencies of a destination are determined the calculation can be extrapolated to match the distance giving the end point -in doing this the sine wave required can be ascertained and be condensed to create a wormhole and allow the alcubierre-white engine to ‘bend or distort space enough so that the bubble you are in matches the required specific gravity of the destination – the frequency of the body nearest to the destination point should be used and resonated inside the bubble to create synchronicity of frequency and cause attraction i also believe that travelling through space require the ability to see things from different perspectives and it requires the ability to navigate through a series of what may be described as “Aims Windows” where your point of view needs to change inherently with a given position at a given point in the galaxy

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Can we time travel? A theoretical physicist provides some answers

Emeritus professor, Physics, Carleton University

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Peter Watson received funding from NSERC. He is affiliated with Carleton University and a member of the Canadian Association of Physicists.

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Bahasa Indonesia

Time travel makes regular appearances in popular culture, with innumerable time travel storylines in movies, television and literature. But it is a surprisingly old idea: one can argue that the Greek tragedy Oedipus Rex , written by Sophocles over 2,500 years ago, is the first time travel story .

But is time travel in fact possible? Given the popularity of the concept, this is a legitimate question. As a theoretical physicist, I find that there are several possible answers to this question, not all of which are contradictory.

The simplest answer is that time travel cannot be possible because if it was, we would already be doing it. One can argue that it is forbidden by the laws of physics, like the second law of thermodynamics or relativity . There are also technical challenges: it might be possible but would involve vast amounts of energy.

There is also the matter of time-travel paradoxes; we can — hypothetically — resolve these if free will is an illusion, if many worlds exist or if the past can only be witnessed but not experienced. Perhaps time travel is impossible simply because time must flow in a linear manner and we have no control over it, or perhaps time is an illusion and time travel is irrelevant.

a woman stands among a crowd of people moving around her

Laws of physics

Since Albert Einstein’s theory of relativity — which describes the nature of time, space and gravity — is our most profound theory of time, we would like to think that time travel is forbidden by relativity. Unfortunately, one of his colleagues from the Institute for Advanced Study, Kurt Gödel, invented a universe in which time travel was not just possible, but the past and future were inextricably tangled.

We can actually design time machines , but most of these (in principle) successful proposals require negative energy , or negative mass, which does not seem to exist in our universe. If you drop a tennis ball of negative mass, it will fall upwards. This argument is rather unsatisfactory, since it explains why we cannot time travel in practice only by involving another idea — that of negative energy or mass — that we do not really understand.

Mathematical physicist Frank Tipler conceptualized a time machine that does not involve negative mass, but requires more energy than exists in the universe .

Time travel also violates the second law of thermodynamics , which states that entropy or randomness must always increase. Time can only move in one direction — in other words, you cannot unscramble an egg. More specifically, by travelling into the past we are going from now (a high entropy state) into the past, which must have lower entropy.

This argument originated with the English cosmologist Arthur Eddington , and is at best incomplete. Perhaps it stops you travelling into the past, but it says nothing about time travel into the future. In practice, it is just as hard for me to travel to next Thursday as it is to travel to last Thursday.

Resolving paradoxes

There is no doubt that if we could time travel freely, we run into the paradoxes. The best known is the “ grandfather paradox ”: one could hypothetically use a time machine to travel to the past and murder their grandfather before their father’s conception, thereby eliminating the possibility of their own birth. Logically, you cannot both exist and not exist.

Read more: Time travel could be possible, but only with parallel timelines

Kurt Vonnegut’s anti-war novel Slaughterhouse-Five , published in 1969, describes how to evade the grandfather paradox. If free will simply does not exist, it is not possible to kill one’s grandfather in the past, since he was not killed in the past. The novel’s protagonist, Billy Pilgrim, can only travel to other points on his world line (the timeline he exists in), but not to any other point in space-time, so he could not even contemplate killing his grandfather.

The universe in Slaughterhouse-Five is consistent with everything we know. The second law of thermodynamics works perfectly well within it and there is no conflict with relativity. But it is inconsistent with some things we believe in, like free will — you can observe the past, like watching a movie, but you cannot interfere with the actions of people in it.

Could we allow for actual modifications of the past, so that we could go back and murder our grandfather — or Hitler ? There are several multiverse theories that suppose that there are many timelines for different universes. This is also an old idea: in Charles Dickens’ A Christmas Carol , Ebeneezer Scrooge experiences two alternative timelines, one of which leads to a shameful death and the other to happiness.

Time is a river

Roman emperor Marcus Aurelius wrote that:

“ Time is like a river made up of the events which happen , and a violent stream; for as soon as a thing has been seen, it is carried away, and another comes in its place, and this will be carried away too.”

We can imagine that time does flow past every point in the universe, like a river around a rock. But it is difficult to make the idea precise. A flow is a rate of change — the flow of a river is the amount of water that passes a specific length in a given time. Hence if time is a flow, it is at the rate of one second per second, which is not a very useful insight.

Theoretical physicist Stephen Hawking suggested that a “ chronology protection conjecture ” must exist, an as-yet-unknown physical principle that forbids time travel. Hawking’s concept originates from the idea that we cannot know what goes on inside a black hole, because we cannot get information out of it. But this argument is redundant: we cannot time travel because we cannot time travel!

Researchers are investigating a more fundamental theory, where time and space “emerge” from something else. This is referred to as quantum gravity , but unfortunately it does not exist yet.

So is time travel possible? Probably not, but we don’t know for sure!

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Time travel: five ways that we could do it

Cathal O’Connell

Cathal O'Connell is a science writer based in Melbourne.

In 2009 the British physicist Stephen Hawking held a party for time travellers – the twist was he sent out the invites a year later (No guests showed up). Time travel is probably impossible. Even if it were possible, Hawking and others have argued that you could never travel back before the moment your time machine was built.

But travel to the future? That’s a different story.

Of course, we are all time travellers as we are swept along in the current of time, from past to future, at a rate of one hour per hour.

But, as with a river, the current flows at different speeds in different places. Science as we know it allows for several methods to take the fast-track into the future. Here’s a rundown.

1. Time travel via speed

This is the easiest and most practical way to time travel into the far future – go really fast.

According to Einstein’s theory of special relativity, when you travel at speeds approaching the speed of light, time slows down for you relative to the outside world.

This is not a just a conjecture or thought experiment – it’s been measured. Using twin atomic clocks (one flown in a jet aircraft, the other stationary on Earth) physicists have shown that a flying clock ticks slower, because of its speed.

In the case of the aircraft, the effect is minuscule. But If you were in a spaceship travelling at 90% of the speed of light, you’d experience time passing about 2.6 times slower than it was back on Earth.

And the closer you get to the speed of light, the more extreme the time-travel.

Computer solves a major time travel problem

The highest speeds achieved through any human technology are probably the protons whizzing around the Large Hadron Collider at 99.9999991% of the speed of light. Using special relativity we can calculate one second for the proton is equivalent to 27,777,778 seconds, or about 11 months , for us.

Amazingly, particle physicists have to take this time dilation into account when they are dealing with particles that decay. In the lab, muon particles typically decay in 2.2 microseconds. But fast moving muons, such as those created when cosmic rays strike the upper atmosphere, take 10 times longer to disintegrate.

2. Time travel via gravity

The next method of time travel is also inspired by Einstein. According to his theory of general relativity, the stronger the gravity you feel, the slower time moves.

As you get closer to the centre of the Earth, for example, the strength of gravity increases. Time runs slower for your feet than your head.

Again, this effect has been measured. In 2010, physicists at the US National Institute of Standards and Technology (NIST) placed two atomic clocks on shelves, one 33 centimetres above the other, and measured the difference in their rate of ticking. The lower one ticked slower because it feels a slightly stronger gravity.

To travel to the far future, all we need is a region of extremely strong gravity, such as a black hole. The closer you get to the event horizon, the slower time moves – but it’s risky business, cross the boundary and you can never escape.

And anyway, the effect is not that strong so it’s probably not worth the trip.

Assuming you had the technology to travel the vast distances to reach a black hole (the nearest is about 3,000 light years away), the time dilation through travelling would be far greater than any time dilation through orbiting the black hole itself.

(The situation described in the movie Interstellar , where one hour on a planet near a black hole is the equivalent of seven years back on Earth, is so extreme as to be impossible in our Universe, according to Kip Thorne, the movie’s scientific advisor.)

The most mindblowing thing, perhaps, is that GPS systems have to account for time dilation effects (due to both the speed of the satellites and gravity they feel) in order to work. Without these corrections, your phones GPS capability wouldn’t be able to pinpoint your location on Earth to within even a few kilometres.

3. Time travel via suspended animation

Another way to time travel to the future may be to slow your perception of time by slowing down, or stopping, your bodily processes and then restarting them later.

Bacterial spores can live for millions of years in a state of suspended animation, until the right conditions of temperature, moisture, food kick start their metabolisms again. Some mammals, such as bears and squirrels, can slow down their metabolism during hibernation, dramatically reducing their cells’ requirement for food and oxygen.

Could humans ever do the same?

Though completely stopping your metabolism is probably far beyond our current technology, some scientists are working towards achieving inducing a short-term hibernation state lasting at least a few hours. This might be just enough time to get a person through a medical emergency, such as a cardiac arrest, before they can reach the hospital.

In 2005, American scientists demonstrated a way to slow the metabolism of mice (which do not hibernate) by exposing them to minute doses of hydrogen sulphide, which binds to the same cell receptors as oxygen. The core body temperature of the mice dropped to 13 °C and metabolism decreased 10-fold. After six hours the mice could be reanimated without ill effects.

Unfortunately, similar experiments on sheep and pigs were not successful, suggesting the method might not work for larger animals.

Another method, which induces a hypothermic hibernation by replacing the blood with a cold saline solution, has worked on pigs and is currently undergoing human clinical trials in Pittsburgh.

4. Time travel via wormholes

General relativity also allows for the possibility for shortcuts through spacetime, known as wormholes, which might be able to bridge distances of a billion light years or more, or different points in time.

Many physicists, including Stephen Hawking, believe wormholes are constantly popping in and out of existence at the quantum scale, far smaller than atoms. The trick would be to capture one, and inflate it to human scales – a feat that would require a huge amount of energy, but which might just be possible, in theory.

Attempts to prove this either way have failed, ultimately because of the incompatibility between general relativity and quantum mechanics.

5. Time travel using light

Another time travel idea, put forward by the American physicist Ron Mallet, is to use a rotating cylinder of light to twist spacetime. Anything dropped inside the swirling cylinder could theoretically be dragged around in space and in time, in a similar way to how a bubble runs around on top your coffee after you swirl it with a spoon.

According to Mallet, the right geometry could lead to time travel into either the past and the future.

Since publishing his theory in 2000, Mallet has been trying to raise the funds to pay for a proof of concept experiment, which involves dropping neutrons through a circular arrangement of spinning lasers.

His ideas have not grabbed the rest of the physics community however, with others arguing that one of the assumptions of his basic model is plagued by a singularity, which is physics-speak for “it’s impossible”.

The Royal Institution of Australia has an Education resource based on this article. You can access it here .

Related Reading: Computer solves a major time travel problem

Originally published by Cosmos as Time travel: five ways that we could do it

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What we think we know about time travel

Credit: Universal Pictures

It's strange living in a post- Back to the Future world. Not only have we surpassed the date of the future portrayed in Back to the Future Part II , we're also 30 years removed from the release of the third and final film , which premiered in theaters on May 25, 1990.

Over the course of three movies, we saw Marty McFly and Doc Brown travel throughout recent human history and the near future, going as far back as the Wild West and as far forward as the unimaginably distant 2015. The Back to the Future films are fanciful science fiction comedies, not meant to be taken seriously. The science is accurate only insofar as it serves to tell a good story.

Still, is it possible to go forward and see our mistakes before they happen? Is it possible to go back and fix things that are already in our past? Here's what we know — or think we know — about time travel.

WHAT IS TIME?

Time: the great equalizer. Time doesn't care about you at all. You can't gain more of it, and you can't give it away. Irrespective of any other thing about you, each of us lives through the same 24 hours every day. Right?

Not exactly.

Time is mushy. It's variable. Some have called it wibbly-wobbly. And it turns out, you can manipulate it if you try hard enough, thanks to Einstein.

We evolved in a sort of medium environment. Human beings are medium-sized objects, somewhere between the very small (quarks, electrons, atoms, and the like) and the very large (planets, stars, and supermassive black holes). And we operate at medium speeds, faster than the slow movements of tectonic plates, but slower than the speed of light.

Physics operates in pretty predictable ways in the world we inhabit. Gravity impacts objects in ways we can accurately measure; comets orbit and return at regular intervals. We know when solar eclipses will happen because the cosmic dance of the sun and moon follows along a known path. Time ticks onward in one direction and at a consistent rate. All is as it should be, all is according to plan.

Outside of our medium-sized world, however, things can get weird.

Physics breaks down when you get too small, or too massive. Gravity does things we can't quite work out, quantum effects find their way in. Things cease to play by the rules as we know them. Likewise, the faster we accelerate beyond our medium speed, the weirder time gets.

Special relativity concluded that the speed of light is consistent for all observers. Photons moving through a vacuum travel at a staggering 186,282 miles per second.

That speed is impressive all on its own. It's fast enough that the time delay between when light hits an object, bounces off, and enters our eyes is so short as to not be noticed. Which is good, especially for our ancient ancestors. It would have been difficult to evade predators if we were already half-swallowed by the time we noticed them.

The speed of light, though, becomes even more impressive and bizarre, because of the way it remains constant no matter the position or speed of the observer. Let's break down what that means. The actual speed of any given object is a combination of its personal speed, combined with the speed of any other objects acting upon it.

For instance, let's suppose you're reading this while sitting down. Your personal speed is zero. You aren't moving at all, relative to any objects you're in contact with. Easy enough. But maybe you're on a train on your way to work, and that train is traveling at 75 miles per hour.

Your speed then becomes the combined speed of you and the speed of the train. Let's go further. The train is traveling at 75 miles per hour relative to the Earth, but the Earth is traveling at 67,000 miles per hour around the Sun. Furthermore, the Sun is traveling at 514,000 miles per hour around the center of our galaxy.

Assuming the train, the Earth, and the Sun are all traveling in the same direction, your total speed is actually 581,075 miles per hour.

That doesn't even take into account the speed of the galaxy through space, but you get the point. To someone sitting on the train with you, our speed is zero. Your speed is different to an observer standing on the ground outside the train, it's different to someone observing from the Sun, or from the center of the galaxy. The position of the observer matters, it changes the outcome.

Speeds compound, that's the way things work in the Medium world. Not so with light.

Replace the train traveler with light and everything we expect about compounding speeds goes out the window. The apparent speed of light remains the same, 186,282 miles per second, regardless of the position or relative speed of the observer. Light gets no faster and no slower.

Special Relativity suggests an elegant, if counterintuitive, solution to this problem. As objects increase in speed, time moves more slowly. Changing the length of each tick of the clock allows the speed of light to remain consistent no matter how fast you're traveling in respect to it.

When Special Relativity was published, these ideas were just numbers on a page, but they've been confirmed by observation and experimentation. In fact, engineers have to account for time dilation when designing satellites.

Because they are orbiting at speeds much faster than we're accustomed to on the ground, a satellite's internal clocks will run more slowly. The difference is very small, but can stack up over time. Since satellites often need to have accurate timekeeping, this time dilation has to be accounted and corrected for.

It gets even more complicated because of gravity.

Gravity bends spacetime and, since GPS satellites orbit so far away from the surface of the Earth, they feel the effects of gravity less than we do, which has the opposite effect of causing the clocks to tick more quickly. All told, GPS satellites in orbit would drift 38 microseconds into the future every day if we didn't account for relativity.

It's a small amount, it would take about 72 years for their clocks to drift ahead of ours by one second, but it's enough to wreak havoc with GPS services, pretty quickly.

Besides, the synchronicity of our clocks isn't the important bit. What's important is the reality that those satellites are actually time-traveling at a rate of one second every 72 years. The effect is slow, but that's only because the fraction of the speed of light at which their traveling is small.

Time isn't static. It's personal. We aren't all experiencing the passage of time in the same way or at the same rate. Every time you get in a car, a train, or a plane, every time you go for a jog or even stagger to the bathroom in the middle of the night, you're altering the way you travel through time.

GRAVITY AND SPEED

Now that we know we can alter our relationship to time, by altering our speed or by manipulating gravity, how can we use that to our advantage and travel to distant temporal locales?

Speed is probably our best bet right now.

Considering the timescale of human existence, we've made incredible strides in increasing our maximum speed over the last several decades. It was once believed we would never break the sound barrier; that was accomplished by Chuck Yeager in 1947, a little more than 70 years ago.

That was the first time a human being traveled faster than 343 meters per second. That's about ten-thousandth of a percent of the speed of light. Pretty fast by human standards — very slow on the cosmic scale.

A little more than a decade later, Neil Armstrong, Buzz Aldrin, and Michael Collins blasted off in a rocket, headed for the Moon. Their top speed was 25,000 miles per hour, more than 32 times faster than Yeager. Still, the crew of Apollo 11 was traveling at only 6.94 miles per second, roughly 0.0037 percent of the speed of light.

Getting closer, some of those zeroes are falling off. Still, it's a long way away.

That's about where we top off, for now. At least for crewed vehicles. We have created faster spacecraft.

The Parker Solar Probe, launched in 2018, was sent on a mission to study the Sun's corona. It approached to within 18.7 million kilometers, granting it the honor of closest approach of any artificial object.

At its fastest, it was traveling 430,000 miles per hour, or, 119.4 miles per second. That gets us to 0.064 of the speed of light.

We'd have to get moving more than 15 times faster than the fastest craft we've ever built to hit one percent the speed of light.

Even at those speeds, we'd notice a difference in relative time of about 26 minutes over the course of a year.

If you really want to time-travel in a significant way, you have to get much faster.

At 90 percent of the speed of light (167,653.8 miles per second), a craft traveling for 10 years according to their own clock would arrive back on Earth to discover that nearly 23 years had passed.

At 99.99 percent of the speed of light, a craft traveling for one year would come back to a world that had aged more than 70 years in their absence.

At 99.99999 percent of the speed of light, for a year, more than 2000 years would pass on Earth.

The point is, the closer you get to the speed of light, the more time dilation is experienced.

Achieving those speeds, however, is incredibly unlikely and probably impossible. Physics conspires against us in this regard. Any object with mass increases in mass as it approaches the speed of light . In effect, it gets heavier, which requires more fuel to continue to accelerate. Eventually, you reach an infinite mass and infinite energy requirement. It's like pushing a stone up a continuously inclining hill. It gets harder the closer you get to the top.

Which is too bad, because nearing the speed of light would allow us to travel forward in time, with minimal investment of personal time. And, if we could break the light speed barrier, all bets are off. The math suggests that it might allow us to violate causality and travel back.

If speed isn't the answer, then what about gravity?

Since we know space and time are intimately tied together, and that gravity impacts both (see GPS satellites, above) sufficiently warping space-time would create closed time loops. At least according to research by theoretical physicist Amos Ori at the Technion-Israel Institute of Technology in Haifa.

Ori suggests using focused gravitational fields to bend spacetime into a donut-shaped vacuum.

There is one speed bump: A traveler would only be able to go to time-destinations that occurred after the creation of the donut. No going back to see the dinosaurs or save your mom from marrying the wrong person. No preventing things that have already happened before the creation of the machine. Additionally, the gravitational fields required are on the order of those created by black holes, far beyond what we're capable of creating or controlling.

For now, time travel is outside of our capability, at least as it's portrayed in movies. If you really want to evade the ticking of the clock, your best bet is to run as fast as you can.

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Time Traveling Brothers Reveal What The Distant Future Will Be Like

Time travel is a fantastical concept that most would consider the stuff of science-fiction. While the idea that someone can journey through time and change the course of history is terrifyingly tantalizing, it’s simply just not though to be possible.

But what if it is—and it already happened? If you ask Al Bielek and his brother, Duncan Cameron, they’d tell you that time travel is possible because they’ve done it. Their apparent journey into the distant future allegedly took place in 1943, and they’ve got some evidence to back up their story.

Whether or not you believe their story is up to you, but they definitely had some very eye-opening things to say when they “returned.”

It’s fascinating to think about the possibility of journeying to another era, but most would agree that time travel isn’t real… or is it? In 1943, a man named Al Bielek and his brother, Duncan Cameron, apparently traveled to the distant future. Upon their return, they had some very startling things to tell the world.

Al and Duncan’s story started in 1943 on Montauk, Long Island. There, the Montauk Air Force Station was allegedly developing psychological warfare techniques that included studying the concept of time travel. The brothers were aboard the USS Eldridge, a top-secret naval ship that could supposedly turn itself invisible and teleport around the world.

If that wasn’t crazy enough already, Al and Duncan claim that they jumped off the ship late one evening, and instead of landing in the water, they traveled to the year 2137!

When they arrived, they spent six full weeks lying in hospital beds recovering from intense radiation poisoning. There was no medical staff at the hospital, and they had no clue where the building was located. Apparently, the futuristic medical system that was treating their injuries used vibrations and light. Sounds nuts, right? Well…

There were televisions lining the rooms that were playing educational and news programming, and that was where the brothers learned some very shocking things about the world.

The first thing they learned was that climate change had significantly altered the geography of the United States. The water level had risen around Florida and reduced it to the panhandle only. Likewise, Atlanta, Georgia, was now only three miles from the ocean, the Mississippi River had become an inland waterway, and the Great Lakes had all merged into one massive body of water. One such source is herbs and herbal medicine. cheap viagra without prescriptions However, this all changed with the introduction of Continue Shopping on line viagra, which allowed men to once again regain their sexual function. It can be increased to a maximum or minimum on the basis of female viagra sildenafil effectiveness and tolerance. One can get the order cheap levitra situation peaceful in half an hour after guzzling Caverta.

The brothers were also shocked to learn that the Earth’s magnetic poles had started to shift! Thankfully, there was an artificial pole structure that was built to prevent the collapse and reversal of the north and south poles, which would have destroyed all life on the planet.

War had also broken out all across the globe. The Russians went to war with China, and the United States was involved in a devastating conflict with several European countries. A number of major U.S. cities were destroyed, and the infrastructure of the government completely collapsed.

One of the most startling pieces of information the brothers supposedly learned was that the entire world’s population had been reduced to 300 million people, with the United States housing 50 million of them. Now, here’s where the brothers’ story gets even more bizarre.

After spending six weeks in the hospital bed in the year 2137, Al claims he inexplicably left his brother behind and traveled to the year 2749, where he remained for two whole years! Here, he described great floating cities that could be moved to different parts of the Earth.

He also said that everything was controlled by a synthetic intelligence computer system that ran the entire world. No form of government existed, and a huge, crystalline floating computer structure communicated with people telepathically. The society was completely socialistic, and every living person had their basic needs for survival taken care of.

After Al’s time in 2749, he was transported back to 2137 to pick up his brother in the hospital, and the two of them then returned to 1943. Many people called this entire story a hoax, but Al and Duncan have sworn that everything they told people was true. What do you think? Some of it sounds impossible, but then again…

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Light Year Calculator

What is light year, how to calculate light years.

With this light year calculator, we aim to help you calculate the distance that light can travel in a certain amount of time . You can also check out our speed of light calculator to understand more about this topic.

We have written this article to help you understand what a light year is and how to calculate a light year using the light year formula . We will also demonstrate some examples to help you understand the light year calculation.

A light year is a unit of measurement used in astronomy to describe the distance that light travels in one year . Since light travels at a speed of approximately 186,282 miles per second (299,792,458 meters per second), a light year is a significant distance — about 5.88 trillion miles (9.46 trillion km) . Please check out our distance calculator to understand more about this topic.

The concept of a light year is important for understanding the distances involved in space exploration. Since the universe is so vast, it's often difficult to conceptualize the distances involved in astronomical measurements. However, by using a light year as a unit of measurement, scientists and astronomers can more easily compare distances between objects in space.

As the light year is a unit of measure for the distance light can travel in a year , this concept can help us to calculate the distance that light can travel in a certain time period. Hence, let's have a look at the following example:

Source: Light
Speed of light: 299,792,458 m/s
Time traveled: 2 years

You can perform the calculation in three steps:

Determine the speed of light.

The speed of light is the fastest speed in the universe, and it is always a constant in a vacuum. Hence, the speed of light is 299,792,458 m/s , which is 9.46×10¹² km/year .

Compute the time that the light has traveled.

The subsequent stage involves determining the duration of time taken by the light to travel. Since we are interested in light years, we will be measuring the time in years.

To facilitate this calculation, you may use our time lapse calculator . In this specific scenario, the light has traveled for a duration of 2 years.

Calculate the distance that the light has traveled.

The final step is to calculate the total distance that the light has traveled within the time . You can calculate this answer using the speed of light formula:

distance = speed of light × time

Thus, the distance that the light can travel in 100 seconds is 9.46×10¹² km/year × 2 years = 1.892×10¹³ km

How do I calculate the distance that light travels?

You can calculate the distance light travels in three steps:

Determine the light speed .

Determine the time the light has traveled.

Apply the light year formula :

distance = light speed × time

How far light can travel in 1 second?

The light can travel 186,282 miles, or 299,792,458 meters, in 1 second . That means light can go around the Earth just over 7 times in 1 second.

Why is the concept of a light year important in astronomy?

The concept of a light year is important in astronomy because it helps scientists and astronomers more easily compare distances between objects in space and understand the vastness of the universe .

Can light years be used to measure time?

No , despite the name, you cannot use light years to measure time. They only measure distance .

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The best time to cruise to alaska in 2024.

Plan your bucket list adventure to explore the extraordinary beauty of the 49th state.

The Best Time to Cruise to Alaska

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Alaska's astounding beauty and vast wilderness are unlike any other destination in the U.S. – and even in the world. While you can plan land-based trips to the state, many of Alaska's majestic snowcapped mountains, pristine forests, glacial waterways and abundant wildlife are in remote locations, only reachable by plane or by boat. That's just one of the many reasons why Alaska is one of the most popular cruise destinations in the world.

If you're ready to stop dreaming and start planning a once-in-a-lifetime adventure to The Great Land, here are tips on the best times to cruise Alaska.

Best Overall Time: Shoulder Seasons

Best time for warmer weather, best time for wildlife viewing, best time for salmon fishing, best time for the northern lights, best time for shore excursions.

View of Margerie Glacier in Glacier Bay from the side of a cruise ship.

If you want to score a deal and have fewer crowds, travel during the shoulder seasons: May and September. In these months, cruise fares are typically lower and ships are not as full, offering more cabin availability. However, with changes in the global climate bringing more moderate temperatures to Alaska, and the cruise season now extending into April and October, cruisers can also expect to find deals in April and October. There will be fewer sailings to choose from, but you may find lower pricing and avoid the peak-season crowds on the ship and in the ports.

In addition, select shore excursions may be available at a discount in the spring and fall. If you're planning on exploring Alaska on your own before or after your cruise, you'll also find cheaper hotel rates at the beginning or end of the cruise season.

Alaska's weather can change dramatically, especially the further north you go, no matter the month or season. While the weather may not be as predictable in April as in the middle of summer, Alaska can be beautiful in springtime with temperatures in the mid-40s, according to Tyler Hickman, senior vice president of Icy Strait Point, an Alaska Native-owned port in Hoonah and a port of call in Southeast Alaska. Hickman says there are long stretches of sunny days and crisp, clear evenings, offering the opportunity for late-season viewing of the northern lights . He also adds that April is one of the favorite times of year for local Alaskans.

If you're interested in cruising to Alaska in April, Norwegian Cruise Line has a few options, including weekly sailings on Norwegian Bliss beginning April 6. The line also offers Alaska itineraries through the end of October. Other lines sailing the extended season in Alaska in late April include Princess Cruises , Holland America Line , Royal Caribbean International , Carnival Cruise Line , UnCruise Adventures and Lindblad Expeditions.

If you prefer to travel in the fall, early October temperatures are usually in the 50s, while the end of the month brings snow in the higher elevations. The days are longer and there are no crowds, so it may be an ideal time to visit if you're not interested in the summer outdoor experiences. Norwegian, Holland America and Seabourn Cruise Line offer sailings in October.

Read: The Best Alaska Cruise Deals

Vacations see Glacier Bay, Alaska, from the bow of a cruise ship.

If you'd prefer warmer weather for your cruise, the summer season in Alaska runs from mid-May to mid-September. During that period, daytime temperatures typically range from 60 to 80 degrees, though they can drop into the 40s overnight. You can expect to have between 16 to 24 hours of daylight in the warmer season. May is considered the driest month, with around a 25% chance of precipitation, but the rain becomes more frequent throughout the summer.

Alaska.org, a website run by local Alaskans that provides travel information and recommendations, advises that the best time to visit in summer is from June 15 to July 15. This 30-day period is regarded as the peak season for warm, dry weather – and it's the perfect time for outdoor activities such as wildlife viewing, fishing and hiking. If you want to experience the most "midnight sun," plan to cruise a few weeks before or after the summer solstice – the longest day of the year – which falls on June 20 in 2024.

Come September, the days are generally shorter, rainier and cooler – but not always. You might get lucky with some unseasonably warm days amid the beautiful fall foliage ; as a bonus, September also means no bugs and fewer crowds.

If you have school-age children, you'll probably need to travel midsummer, during peak season. However, if you're flexible on dates, there's really no bad time to visit this magical destination. Mountain peaks shrouded in clouds or misty days cruising Glacier Bay National Park and Preserve in late April are as beautiful as sunny days hiking through Tongass National Forest or whale watching on an excursion out of Icy Strait Point in July.

Read: The Best Places to Visit in Alaska

According to Glacier Bay National Park and Preserve, one of the top destinations on the Inside Passage itinerary, wildlife viewing is possible year-round, especially if you have your binoculars at hand. When you're not watching for turquoise ice calving in the bay from the glaciers, you might see humpback whales as long as 65 feet or black and brown bears up to 10 feet tall – as well as orcas, harbor and Dall's porpoises, sea otters, harbor seals, mountain goats, sea lions, seabirds, and bald eagles soaring overhead. And that's just what you can view from the ship.

During cruises through the park, rangers board the ships to offer commentary and information about the marine and terrestrial wildlife. They also help spot whales or other animals along the way. One of the highlights while cruising slowly through the park is to go outside on the bow of the ship – or even out onto your veranda – to listen to the incredible silence of this otherworldly place. You may hear nothing at all, or perhaps you'll be treated to the sounds of birds in the distance or the swoosh from a whale's blowhole before it dives down below the water's surface.

It's possible to view certain animals and marine life throughout the year, according to Hickman. "Whale sightings are consistent from May through September, with fewer occurring in April and October as they migrate from or to Hawaii for the winter," he says, adding: "Even on a foggy day when you can't see the whales, you can still hear them and feel their presence – and that's almost as incredible as seeing them from a ship or along the coastline."

If you're interested in spotting brown bears, here is Hickman's advice: "Bear sightings in the spring will depend on the snowpack and when they are leaving hibernation. This year we had very good bear viewing along the Spasski River starting in May when the coastal brown bears emerged from hibernation."

He adds, "They feed on the grass of the valley and eat skunk cabbage roots in May and early June. As the berries start to emerge in June, it holds many of the same bears, and as we get into mid-July, the salmon start heading upstream. There is a constant food source from May through September at Spasski. Many of the other bear viewing areas do not have the same features we have, and it leads to people thinking that bears are only around when fish are in the rivers."

Chichagof Island – the location of Hoonah and Icy Strait Point – was given the nickname "Bear Island" by National Geographic. The island boasts one to two brown bears per square mile, making it one of the largest brown bear populations in the world. Hickman says you're nearly guaranteed to see bears on one of Icy Strait Point's bear-watching tours. Icy Point Strait also offers whale watching adventures and other treks into the wilderness.

Alaska.org points to May through September as the best time for wildlife viewing, though you can spot some animals year-round, like moose or orcas. The website also advises that fly-in bear viewing starts in May but is at its best in July.

Looking to book a cruise to see Alaska's wildlife? See the top cruises on GoToSea , a service of U.S. News.

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Alaska Brown Bear fishing for Sockeye Salmon at Brooks River and Waterfalls, Katmai National Park, Alaska.

If you are an avid angler – or just want to watch the bears fish for their supper – then visit Alaska during the peak salmon runs, from May to September. King salmon season begins in May and goes through the end of July. The silver salmon run lasts from July up until the end of November. Red salmon are available between mid-June and mid-August, while you can catch pink and chum salmon in the brief window from mid-July to mid-August.

If you prefer halibut or just want to get out on the ocean, the best time for this wild Pacific species is from May to September. You can also seek out many other river and ocean species, such as rainbow trout, arctic char and northern pike. Cruise lines offer fishing excursions, or you can arrange for a private or group charter in an Alaskan town like Ketchikan.

If you want to see brown bears during the salmon run, book a bear-viewing excursion in one of the ports, such as Icy Strait Point. Or, extend your trip by combining a visit to Katmai National Park and Preserve and the renowned Brooks River with a stay at Brooks Lodge. Brooks Falls is the site for iconic photos of bears catching salmon that are jumping over the falls, and you may be able to view the bears feasting in salmon season when the property is open, from June through mid-September. The lodge is accessible by floatplane from King Salmon. You can also add a flyover tour during your stay to see the Valley of Ten Thousand Smokes, an area in southern Alaska transformed by ash from the 1912 Novarupta-Katmai volcanic eruption.

Northern lights above Alaskan mountains.

Aurora season – the best time to see the northern lights in Alaska – runs from mid-August to mid-April. While some passengers cruising the Inside Passage may catch a glimpse of the phenomenon in late summer and early fall, it's not guaranteed. As southeast Alaska typically has more precipitation and clouds since it's a temperate rainforest, you likely won't find optimal conditions for aurora viewing here.

Your chances to see the lights are better the further north you go, so you may want to look at booking a cruisetour: a land and sea package that's usually offered by some of the major cruise lines from May through September. These combined trips generally include the cruise, overnight accommodations in lodges, railway journeys and motorcoach travel between destinations.

With these tours, you'll be able to visit the vast landscape of Alaska, where you can explore cities like Anchorage and Fairbanks or spend time in Denali National Park and Preserve – and you'll have a better chance to view the northern lights. Lines that offer cruisetours include Norwegian, Celebrity Cruises , Holland America, Princess and Royal Caribbean.

Since 2024 is projected to be one of the best years to view the aurora borealis in Alaska, you might want to extend your trip to venture above the Arctic Circle or into Alaska's interior for a prime viewing opportunity. Fairbanks and the Arctic region are under the auroral oval, which is where the northern lights activity is concentrated. You can watch the forecast for the aurora borealis online at Explore Fairbanks' Aurora Tracker and the Geophysical Institute's Aurora Forecast .

Read: The Top Places to See the Northern Lights

Aerial of Ketchikan, Alaska, on a sunny day.

Some of the excursions offered on an Alaskan cruise may be the most expensive tours you've seen on a ship, but they're also probably some of the coolest things you've ever thought about doing while on vacation.

Note that the probability of a tour being canceled for weather is almost the same for all tours offered between April and October, as the weather in Alaska can be unpredictable. Some of the more extreme tours, however, may not be available early or late in the season. If you want the best chance for optimal weather, consider the advice from Alaska.org and book your cruise between mid-June and mid-July.

If you're looking at splurging on a bucket list adventure while in Skagway – like Alaska Shore Tours' flightseeing helicopter adventure, which includes a dog-sledding experience on a glacier – you should check to make sure it's available the month you'll be cruising. This particular tour may not be open for booking before May or after September due to the conditions for the sled dogs.

Another over-the-top excursion dependent on optimal weather conditions is the Heli-Hike and Rail Adventure that begins in Skagway. This tour includes a helicopter ride from town that flies over glaciers and mountains, then drops you off for a roughly 5-mile guided hike to view Laughton Glacier and learn about the natural history of the area. After the hike, you'll board the White Pass & Yukon Route Railroad at Glacier Station for the scenic journey through the mountains back to Skagway.

If you're interested in the Misty Fjords Flightseeing tour in Ketchikan, this thrilling ride is also best on a clear day. This Alaskan bush plane tour soars over the Misty Fjords National Monument, which has more than 2 million acres of pristine lakes, waterfalls, ancient forests and snowcapped mountains.

Tours that include activities like mountain climbing or navigating suspension bridges might also be best when done on a sunny day. The prime time for wildlife viewing and fishing, as mentioned above, will depend on what animals you're interested in seeing and which species of fish you want to catch.

The ship's excursion desk, local guides or tour providers can offer the best advice on how to plan your activities. No matter which tours you opt to take, be prepared for the ever-changing weather patterns by wearing layers – and make sure to bring a waterproof rain jacket. Before booking, you should check the individual tour operator's cancellation and refund policy.

Read: The Best Alaska Tours

The Bottom Line

If you're flexible as to when you can travel to Alaska, you may be able to take advantage of lower pricing, travel incentives and added perks in the shoulder seasons – and you'll have fewer crowds than in the busy summer months.

If your goal is to view wildlife, then most of the cruise season, especially from May to September, will offer ample opportunities to see bears, humpbacks whales, bald eagles and other amazing animals – depending on the itinerary and excursions you choose. You'll also be able to catch Alaska's prized salmon throughout much of the cruise season.

And if extreme adventures are going to be the highlight of your vacation, then be sure to check with the tour providers to make sure your top picks are offered when you're planning to travel. Not all tour providers operate the full seven months of the season.

No matter when you decide to visit, a cruise to The Great Land will be one of the most memorable vacations of your lifetime.

Planning a cruise to see Alaska? See the top cruises on GoToSea , a service of U.S. News.

Why Trust U.S. News Travel

Gwen Pratesi is a U.S. News contributor and an avid travel adventurer who fell in love with Alaska on her first visit to the state many years ago. She's returned several times on land trips and by ship to seek year-round outdoor adventure, view wildlife and chase the northern lights in one of the best places on the planet to view them. She's even considered moving to The Great Land as a full-time resident. Pratesi used her deep knowledge of Alaska and the cruise industry to write this article.

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What the data says about abortion in the U.S.

Pew Research Center has conducted many surveys about abortion over the years, providing a lens into Americans’ views on whether the procedure should be legal, among a host of other questions.

In a Center survey conducted nearly a year after the Supreme Court’s June 2022 decision that ended the constitutional right to abortion , 62% of U.S. adults said the practice should be legal in all or most cases, while 36% said it should be illegal in all or most cases. Another survey conducted a few months before the decision showed that relatively few Americans take an absolutist view on the issue .

Find answers to common questions about abortion in America, based on data from the Centers for Disease Control and Prevention (CDC) and the Guttmacher Institute, which have tracked these patterns for several decades:

How many abortions are there in the U.S. each year?

How has the number of abortions in the u.s. changed over time, what is the abortion rate among women in the u.s. how has it changed over time, what are the most common types of abortion, how many abortion providers are there in the u.s., and how has that number changed, what percentage of abortions are for women who live in a different state from the abortion provider, what are the demographics of women who have had abortions, when during pregnancy do most abortions occur, how often are there medical complications from abortion.

This compilation of data on abortion in the United States draws mainly from two sources: the Centers for Disease Control and Prevention (CDC) and the Guttmacher Institute, both of which have regularly compiled national abortion data for approximately half a century, and which collect their data in different ways.

The CDC data that is highlighted in this post comes from the agency’s “abortion surveillance” reports, which have been published annually since 1974 (and which have included data from 1969). Its figures from 1973 through 1996 include data from all 50 states, the District of Columbia and New York City – 52 “reporting areas” in all. Since 1997, the CDC’s totals have lacked data from some states (most notably California) for the years that those states did not report data to the agency. The four reporting areas that did not submit data to the CDC in 2021 – California, Maryland, New Hampshire and New Jersey – accounted for approximately 25% of all legal induced abortions in the U.S. in 2020, according to Guttmacher’s data. Most states, though, do have data in the reports, and the figures for the vast majority of them came from each state’s central health agency, while for some states, the figures came from hospitals and other medical facilities.

Discussion of CDC abortion data involving women’s state of residence, marital status, race, ethnicity, age, abortion history and the number of previous live births excludes the low share of abortions where that information was not supplied. Read the methodology for the CDC’s latest abortion surveillance report , which includes data from 2021, for more details. Previous reports can be found at stacks.cdc.gov by entering “abortion surveillance” into the search box.

For the numbers of deaths caused by induced abortions in 1963 and 1965, this analysis looks at reports by the then-U.S. Department of Health, Education and Welfare, a precursor to the Department of Health and Human Services. In computing those figures, we excluded abortions listed in the report under the categories “spontaneous or unspecified” or as “other.” (“Spontaneous abortion” is another way of referring to miscarriages.)

Guttmacher data in this post comes from national surveys of abortion providers that Guttmacher has conducted 19 times since 1973. Guttmacher compiles its figures after contacting every known provider of abortions – clinics, hospitals and physicians’ offices – in the country. It uses questionnaires and health department data, and it provides estimates for abortion providers that don’t respond to its inquiries. (In 2020, the last year for which it has released data on the number of abortions in the U.S., it used estimates for 12% of abortions.) For most of the 2000s, Guttmacher has conducted these national surveys every three years, each time getting abortion data for the prior two years. For each interim year, Guttmacher has calculated estimates based on trends from its own figures and from other data.

The latest full summary of Guttmacher data came in the institute’s report titled “Abortion Incidence and Service Availability in the United States, 2020.” It includes figures for 2020 and 2019 and estimates for 2018. The report includes a methods section.

In addition, this post uses data from StatPearls, an online health care resource, on complications from abortion.

An exact answer is hard to come by. The CDC and the Guttmacher Institute have each tried to measure this for around half a century, but they use different methods and publish different figures.

The last year for which the CDC reported a yearly national total for abortions is 2021. It found there were 625,978 abortions in the District of Columbia and the 46 states with available data that year, up from 597,355 in those states and D.C. in 2020. The corresponding figure for 2019 was 607,720.

The last year for which Guttmacher reported a yearly national total was 2020. It said there were 930,160 abortions that year in all 50 states and the District of Columbia, compared with 916,460 in 2019.

How the CDC gets its data: It compiles figures that are voluntarily reported by states’ central health agencies, including separate figures for New York City and the District of Columbia. Its latest totals do not include figures from California, Maryland, New Hampshire or New Jersey, which did not report data to the CDC. ( Read the methodology from the latest CDC report .)
How Guttmacher gets its data: It compiles its figures after contacting every known abortion provider – clinics, hospitals and physicians’ offices – in the country. It uses questionnaires and health department data, then provides estimates for abortion providers that don’t respond. Guttmacher’s figures are higher than the CDC’s in part because they include data (and in some instances, estimates) from all 50 states. ( Read the institute’s latest full report and methodology .)

While the Guttmacher Institute supports abortion rights, its empirical data on abortions in the U.S. has been widely cited by groups and publications across the political spectrum, including by a number of those that disagree with its positions .

These estimates from Guttmacher and the CDC are results of multiyear efforts to collect data on abortion across the U.S. Last year, Guttmacher also began publishing less precise estimates every few months , based on a much smaller sample of providers.

The figures reported by these organizations include only legal induced abortions conducted by clinics, hospitals or physicians’ offices, or those that make use of abortion pills dispensed from certified facilities such as clinics or physicians’ offices. They do not account for the use of abortion pills that were obtained outside of clinical settings .

(Back to top)

A line chart showing the changing number of legal abortions in the U.S. since the 1970s.

The annual number of U.S. abortions rose for years after Roe v. Wade legalized the procedure in 1973, reaching its highest levels around the late 1980s and early 1990s, according to both the CDC and Guttmacher. Since then, abortions have generally decreased at what a CDC analysis called “a slow yet steady pace.”

Guttmacher says the number of abortions occurring in the U.S. in 2020 was 40% lower than it was in 1991. According to the CDC, the number was 36% lower in 2021 than in 1991, looking just at the District of Columbia and the 46 states that reported both of those years.

(The corresponding line graph shows the long-term trend in the number of legal abortions reported by both organizations. To allow for consistent comparisons over time, the CDC figures in the chart have been adjusted to ensure that the same states are counted from one year to the next. Using that approach, the CDC figure for 2021 is 622,108 legal abortions.)

There have been occasional breaks in this long-term pattern of decline – during the middle of the first decade of the 2000s, and then again in the late 2010s. The CDC reported modest 1% and 2% increases in abortions in 2018 and 2019, and then, after a 2% decrease in 2020, a 5% increase in 2021. Guttmacher reported an 8% increase over the three-year period from 2017 to 2020.

As noted above, these figures do not include abortions that use pills obtained outside of clinical settings.

Guttmacher says that in 2020 there were 14.4 abortions in the U.S. per 1,000 women ages 15 to 44. Its data shows that the rate of abortions among women has generally been declining in the U.S. since 1981, when it reported there were 29.3 abortions per 1,000 women in that age range.

The CDC says that in 2021, there were 11.6 abortions in the U.S. per 1,000 women ages 15 to 44. (That figure excludes data from California, the District of Columbia, Maryland, New Hampshire and New Jersey.) Like Guttmacher’s data, the CDC’s figures also suggest a general decline in the abortion rate over time. In 1980, when the CDC reported on all 50 states and D.C., it said there were 25 abortions per 1,000 women ages 15 to 44.

That said, both Guttmacher and the CDC say there were slight increases in the rate of abortions during the late 2010s and early 2020s. Guttmacher says the abortion rate per 1,000 women ages 15 to 44 rose from 13.5 in 2017 to 14.4 in 2020. The CDC says it rose from 11.2 per 1,000 in 2017 to 11.4 in 2019, before falling back to 11.1 in 2020 and then rising again to 11.6 in 2021. (The CDC’s figures for those years exclude data from California, D.C., Maryland, New Hampshire and New Jersey.)

The CDC broadly divides abortions into two categories: surgical abortions and medication abortions, which involve pills. Since the Food and Drug Administration first approved abortion pills in 2000, their use has increased over time as a share of abortions nationally, according to both the CDC and Guttmacher.

The majority of abortions in the U.S. now involve pills, according to both the CDC and Guttmacher. The CDC says 56% of U.S. abortions in 2021 involved pills, up from 53% in 2020 and 44% in 2019. Its figures for 2021 include the District of Columbia and 44 states that provided this data; its figures for 2020 include D.C. and 44 states (though not all of the same states as in 2021), and its figures for 2019 include D.C. and 45 states.

Guttmacher, which measures this every three years, says 53% of U.S. abortions involved pills in 2020, up from 39% in 2017.

Two pills commonly used together for medication abortions are mifepristone, which, taken first, blocks hormones that support a pregnancy, and misoprostol, which then causes the uterus to empty. According to the FDA, medication abortions are safe until 10 weeks into pregnancy.

Surgical abortions conducted during the first trimester of pregnancy typically use a suction process, while the relatively few surgical abortions that occur during the second trimester of a pregnancy typically use a process called dilation and evacuation, according to the UCLA School of Medicine.

In 2020, there were 1,603 facilities in the U.S. that provided abortions, according to Guttmacher . This included 807 clinics, 530 hospitals and 266 physicians’ offices.

A horizontal stacked bar chart showing the total number of abortion providers down since 1982.

While clinics make up half of the facilities that provide abortions, they are the sites where the vast majority (96%) of abortions are administered, either through procedures or the distribution of pills, according to Guttmacher’s 2020 data. (This includes 54% of abortions that are administered at specialized abortion clinics and 43% at nonspecialized clinics.) Hospitals made up 33% of the facilities that provided abortions in 2020 but accounted for only 3% of abortions that year, while just 1% of abortions were conducted by physicians’ offices.

Looking just at clinics – that is, the total number of specialized abortion clinics and nonspecialized clinics in the U.S. – Guttmacher found the total virtually unchanged between 2017 (808 clinics) and 2020 (807 clinics). However, there were regional differences. In the Midwest, the number of clinics that provide abortions increased by 11% during those years, and in the West by 6%. The number of clinics decreased during those years by 9% in the Northeast and 3% in the South.

The total number of abortion providers has declined dramatically since the 1980s. In 1982, according to Guttmacher, there were 2,908 facilities providing abortions in the U.S., including 789 clinics, 1,405 hospitals and 714 physicians’ offices.

The CDC does not track the number of abortion providers.

In the District of Columbia and the 46 states that provided abortion and residency information to the CDC in 2021, 10.9% of all abortions were performed on women known to live outside the state where the abortion occurred – slightly higher than the percentage in 2020 (9.7%). That year, D.C. and 46 states (though not the same ones as in 2021) reported abortion and residency data. (The total number of abortions used in these calculations included figures for women with both known and unknown residential status.)

The share of reported abortions performed on women outside their state of residence was much higher before the 1973 Roe decision that stopped states from banning abortion. In 1972, 41% of all abortions in D.C. and the 20 states that provided this information to the CDC that year were performed on women outside their state of residence. In 1973, the corresponding figure was 21% in the District of Columbia and the 41 states that provided this information, and in 1974 it was 11% in D.C. and the 43 states that provided data.

In the District of Columbia and the 46 states that reported age data to the CDC in 2021, the majority of women who had abortions (57%) were in their 20s, while about three-in-ten (31%) were in their 30s. Teens ages 13 to 19 accounted for 8% of those who had abortions, while women ages 40 to 44 accounted for about 4%.

The vast majority of women who had abortions in 2021 were unmarried (87%), while married women accounted for 13%, according to the CDC , which had data on this from 37 states.

A pie chart showing that, in 2021, majority of abortions were for women who had never had one before.

In the District of Columbia, New York City (but not the rest of New York) and the 31 states that reported racial and ethnic data on abortion to the CDC , 42% of all women who had abortions in 2021 were non-Hispanic Black, while 30% were non-Hispanic White, 22% were Hispanic and 6% were of other races.

Looking at abortion rates among those ages 15 to 44, there were 28.6 abortions per 1,000 non-Hispanic Black women in 2021; 12.3 abortions per 1,000 Hispanic women; 6.4 abortions per 1,000 non-Hispanic White women; and 9.2 abortions per 1,000 women of other races, the CDC reported from those same 31 states, D.C. and New York City.

For 57% of U.S. women who had induced abortions in 2021, it was the first time they had ever had one, according to the CDC. For nearly a quarter (24%), it was their second abortion. For 11% of women who had an abortion that year, it was their third, and for 8% it was their fourth or more. These CDC figures include data from 41 states and New York City, but not the rest of New York.

A bar chart showing that most U.S. abortions in 2021 were for women who had previously given birth.

Nearly four-in-ten women who had abortions in 2021 (39%) had no previous live births at the time they had an abortion, according to the CDC . Almost a quarter (24%) of women who had abortions in 2021 had one previous live birth, 20% had two previous live births, 10% had three, and 7% had four or more previous live births. These CDC figures include data from 41 states and New York City, but not the rest of New York.

The vast majority of abortions occur during the first trimester of a pregnancy. In 2021, 93% of abortions occurred during the first trimester – that is, at or before 13 weeks of gestation, according to the CDC . An additional 6% occurred between 14 and 20 weeks of pregnancy, and about 1% were performed at 21 weeks or more of gestation. These CDC figures include data from 40 states and New York City, but not the rest of New York.

About 2% of all abortions in the U.S. involve some type of complication for the woman , according to an article in StatPearls, an online health care resource. “Most complications are considered minor such as pain, bleeding, infection and post-anesthesia complications,” according to the article.

The CDC calculates case-fatality rates for women from induced abortions – that is, how many women die from abortion-related complications, for every 100,000 legal abortions that occur in the U.S . The rate was lowest during the most recent period examined by the agency (2013 to 2020), when there were 0.45 deaths to women per 100,000 legal induced abortions. The case-fatality rate reported by the CDC was highest during the first period examined by the agency (1973 to 1977), when it was 2.09 deaths to women per 100,000 legal induced abortions. During the five-year periods in between, the figure ranged from 0.52 (from 1993 to 1997) to 0.78 (from 1978 to 1982).

The CDC calculates death rates by five-year and seven-year periods because of year-to-year fluctuation in the numbers and due to the relatively low number of women who die from legal induced abortions.

In 2020, the last year for which the CDC has information , six women in the U.S. died due to complications from induced abortions. Four women died in this way in 2019, two in 2018, and three in 2017. (These deaths all followed legal abortions.) Since 1990, the annual number of deaths among women due to legal induced abortion has ranged from two to 12.

The annual number of reported deaths from induced abortions (legal and illegal) tended to be higher in the 1980s, when it ranged from nine to 16, and from 1972 to 1979, when it ranged from 13 to 63. One driver of the decline was the drop in deaths from illegal abortions. There were 39 deaths from illegal abortions in 1972, the last full year before Roe v. Wade. The total fell to 19 in 1973 and to single digits or zero every year after that. (The number of deaths from legal abortions has also declined since then, though with some slight variation over time.)

The number of deaths from induced abortions was considerably higher in the 1960s than afterward. For instance, there were 119 deaths from induced abortions in 1963 and 99 in 1965 , according to reports by the then-U.S. Department of Health, Education and Welfare, a precursor to the Department of Health and Human Services. The CDC is a division of Health and Human Services.

Note: This is an update of a post originally published May 27, 2022, and first updated June 24, 2022.

Support for legal abortion is widespread in many countries, especially in Europe

Nearly a year after roe’s demise, americans’ views of abortion access increasingly vary by where they live, by more than two-to-one, americans say medication abortion should be legal in their state, most latinos say democrats care about them and work hard for their vote, far fewer say so of gop, positive views of supreme court decline sharply following abortion ruling, most popular.

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2024 could be the year to travel as airfare prices are declining

Last month there was a notable decline in airfare prices, with a 7.1% decrease compared to the same month last year.

A traveler pushes a cart topped with baggage in Denver International Airport.

If you've noticed that airfare prices seem a bit more affordable lately, it's because they're on a downward trend.

According to data released Tuesday by the U.S. Department of Transportation, the average domestic airfare for 2023 was $382, making it 3.1% lower than the inflation-adjusted average fare of $394 in 2022; and it's 36.4% lower than the peak fare of $600 recorded in 2000.

The news comes while costs continue to rise in most other sectors — yet the desire to travel continues to increase.

"In the first quarter 2023, passenger demand increased with U.S. airlines reporting 75.4 million originating passengers, up 138.8% from 31.6 million passengers in the fourth quarter of 2020," DOT said in the press release. "U.S. passenger airlines collected 74.2% of total operating revenue of $39.2 billion from passenger fares during the first three months of 2023, down from 88.5% in 1990."

As for the numbers for this year, Nerdwallet reports that airfares dropped by 7.1% in March compared to the same month in 2023, and since 2019 before the start of the pandemic, airfares have only gone up by 2.6%.

While the prices are a bit lower, airlines like Delta are still benefiting from the traveling boom. Delta's first-quarter earnings report highlighted a $37 million profit fueled by the strong demand, and the airline says they expect the trend to continue throughout the summer.

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Weather in Madeira in February travel guide

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written by Olga Sitnitsa

updated 16.04.2024

February in Madeira offers a mild winter climate when the island enjoys a comfortable chill, often buffeted by a soft Atlantic breeze. The pleasant weather in Madeira in February creates the perfect conditions for exploring the stunning mountains, beautiful gardens, and picturesque villages. The mild temperatures and friendly atmosphere are ideal for walking in the levadas, enjoying the local cuisine, and relaxing on the quiet beaches, which are pleasantly cool and offer a peaceful retreat.

Highlights Madeira weather in February

Is february a good time to visit madeira, average temperatures in madeira in february, what about the crowd & cost, unforgettable and customizable portugal itineraries, what to do and see in madeira in february, visit madeira in different months, tailor-made travel itineraries for portugal, created by local experts.

7 days / from 3005 USD

Iberian Blend - Porto and Galicia

Neighbour countries - Portugal and Spain, different and similar at the same time, will surprise you with hospitality and loveliness. This itinerary includes the route of the Northwest part of Iberian Peninsula and offers you to meet beautiful Porto and stunning Vigo in Galicia/Spain.

7 days / from 2963 USD

The Real Algarvian Experience

Experience and discover the real Algarve – taste local produce, drinks and traditional dishes, visit heritage sites and participate in culinary activities. If you are passionate about the people’s culture and gastronomy and want to learn more, this itinerary is for you.

11 days / from 1696 USD

A self drive to Portugal's North and Center

Starting in fascinating Lisbon, this trip allows you to discover Portugal both on your own as well as with guided tours. Driving further up north you'll explore Coimbra and Porto before heading to the Douro Valley and Alentejo.

Tailor-made trips for Portugal

The weather in Madeira in February is characterized by a mild winter climate, maintaining the island's reputation for year-round pleasant temperatures. Here are the highlights:

Moderate temperatures : In February, average temperatures range from cool to comfortably mild, making it ideal for those who prefer a cooler climate without extreme cold.
Rainfall : This month is part of the wetter season in Madeira, with occasional rainfall throughout the month. However, the rains often come in quick bursts and are usually interspersed with periods of clear skies, allowing for time to spend outdoors and explore the surrounding area.
Sunshine : Despite the increased chance of rain, February also has many clear and bright days, with an average of 5-6 hours of sunshine daily. This provides ample opportunity for sightseeing and enjoying the island's natural beauty.
Sea temperature : The sea remains relatively cool, with an average sea temperature of around 18°C (64°F), which can be a little bracing for swimming but still pleasant for those used to cooler water.
Atmosphere : There are fewer tourists in Madeira in February than during the peak season, allowing for a more relaxed and peaceful experience of the island's attractions, from its charming towns to its natural wonders.

Keen to visit Madeira? Talk to our local Portugal experts to kick-start creating your dream trip. And to ensure you're well-equipped for your trip explore our list of tips for traveling in Portugal .

toboggan-wooden-sledge-funchal-madeira-portugal-shutterstock_630780314

February in Madeira has a mild winter climate, offering a unique combination of weather conditions that can nevertheless affect travel plans. The island tends to be cooler at this time of year, with sunny and rainy days alternating.

While you can still count on a few hours of sunshine each day, February is also part of Madeira's wetter season, which means the likelihood of occasional downpours. This variability in the weather in Madeira in February can be a two-pronged stick: on the one hand, the rain feeds the island's lush landscapes, making outdoor activities such as hiking in the levadas particularly scenic. On the other hand, heavy downpours can sometimes disrupt vacation or transportation plans.

February falls during Madeira's low tourism season, primarily due to the cooler and wetter weather. This means less crowding at popular attractions and potentially lower accommodation and flight prices, making for a more relaxed trip.

Overall, February can be a great time to visit Madeira if you prefer mild weather and fewer tourists. The combination of cooler temperatures, moderate tourist numbers and the possibility of both sunny and rainy days creates an attractive environment for exploring the island's natural beauty. However, if your travel plans rely heavily on guaranteed sunshine and outdoor activities, you may find the unpredictability of February's weather a bit challenging.

Editor’s tip: for a bigger picture of the weather, read up on the best time to visit Portugal .

In February, Madeira enjoys a mild winter climate characterized by average high temperatures of 16-19°C (61-66°F) and average lows of 11-13°C (52-55°F) . With these temperatures, February is one of the coolest months on the island, but still quite mild compared to winter conditions in mainland Europe.

Variations between day and night can be noticeable, but not extreme. Temperatures are cooler in the evening and early morning, allowing you to sleep without heavy bedding. During the day, it's warm enough for outdoor activities, although a light jacket or sweater may not be unreasonable, especially when exploring coastal or mountainous areas where the weather can be more changeable.

When comparing February temperatures to other times of the year, it is cooler than the summer months, when temperatures can climb into the mid-20s°C (mid-70s°F) or higher, but marginally warmer than the coldest months such as December and January. February's climate is a refreshing contrast to the warm, dry summers, offering cooler and more varied weather, but still comfortable for exploring all that Madeira has to offer.

Want even more inspiration for your Portugal adventure? Discover the best places to visit in Portugal .

February is the low tourist season in Madeira, which means less crowding at popular attractions and sites. This reduced tourist flow provides a quieter vacation, allowing you to experience the beauty of the island without the hustle and bustle of the high season, such as July and August. Due to the reduced demand, February also offers the advantage of lower accommodation prices and possibly airfares, making it a cost-effective time to travel.

Moreover, the benefits of visiting Madeira in February go beyond just financial savings and more relaxed sightseeing opportunities. This time of year features unique events such as the Madeira Carnival , one of the island's most colorful celebrations, providing guests with a great opportunity to experience the local culture and festivities.

Compared to the summer months, when prices peak and places become crowded, February offers a balance of mild weather, cultural experiences, and value for money, making it an attractive option if you want to enjoy Madeira's charms at a more relaxed pace.

Walking route hiking trail Levada das 25 Fontes on Paul da Serra plain / Plateau Paul da Serra on sunny day Madeira island © Shutterstock

Are you ready to plan your dream trip to Portugal? The local experts at Rough Guides can help you create a fully customized and unforgettable itinerary tailored to your preferences . Here are three tantalizing travel options you should consider:

Azores Adventure (6 days): Discover the traditions and natural beauty that San Miguel Island has to offer you - exciting activities such as swimming with dolphins in their natural habitat in the Atlantic Ocean, hiking through picturesque hills and valleys, the thrill of canyoning and much more.
The Wines of Portugal (9 days): This unforgettable journey takes you to some of Portugal's best wine regions, including the Douro Valley. Taste the best local varieties and explore the exciting and stunningly beautiful cities of Lisbon and Porto, complete with guided tours of their historic old towns.
Madeira and São Miguel - guided island adventures (9 days): Visit Portugal's two autonomous regions: Madeira, the island of eternal spring as it is known, and São Miguel, nicknamed the green island. Guided tours will introduce you to the highlights of both islands, with plenty of time to explore on your own or simply relax.

In February, Madeira offers a combination of cultural festivals, natural beauty, and serene relaxation, making it a great destination for those who want to explore the island's diverse attractions at a leisurely pace.

Madeira Carnival : Experience the vibrant festivities of one of Madeira's biggest annual events. The streets come alive with colorful parades, elaborate costumes, and lively music, offering a unique glimpse into the island's rich cultural tapestry.
Visit Festa dos Compadres : Kick off the carnival season in the quaint town of Santana with this traditional event that marks the beginning of pre-holiday festivities in Madeira. Satirical skits, costumed parades, and burning of effigies offer a unique take on local customs and humor.
Watch the almond blossoms at Quinta do Arco : In late winter, the almond trees bloom, covering parts of the island in a delicate white and pink blanket of flowers. In the garden of Quinta do Arco, you can observe the stunning almond blossom, the perfect backdrop for leisurely strolls and photography.
Visit the thermal baths in Ponta do Sol : To relax, visit the natural thermal pools in Ponta do Sol. These warm, mineral-rich waters are ideal for relaxation and rejuvenation in a serene setting, especially appealing during the chilly month of February.
Wine tasting in Funchal : February's chilly evenings are perfect for cozying up with a glass of Madeira wine. Visit several historic wine houses in Funchal for a tasting where you will learn about the wine making process and taste different varieties of this world famous fortified wine.

Madeira offers only a fraction of the unique experiences that Portugal has to offer. For even more ideas for your vacation, see our guide to the best things to do in Portugal .

A year-round paradise, Madeira offers unique experiences every month to suit a variety of travelers' preferences. Whether you are looking for outdoor adventures, cultural events, or just a relaxing vacation in nature, Madeira's diverse climate and activities ensure that there is always something special to do here.

March : Spring awakens with blooming flowers and ideal temperatures for hiking and outdoor activities.
April : Delight in the Madeira Flower Festival, where the island explodes with color and fragrant displays.
May : Enjoy comfortable temperatures and the start of the season of outdoor activities, including the Madeira Island Ultra Trail.
June : Take part in the Atlantic Festival with fireworks and music, which marks the beginning of the summer festivities.
July : Enjoy the summer heat, ideal for beach walks and water sports in Madeira's crystal clear waters.
August : Experience the peak of summer with lively street festivals, including the popular Madeira Wine Festival.
September : Take advantage of warm seas and less crowded attractions as the high season comes to an end.
October : Watch the leaves change and enjoy the mild weather, ideal for exploring the island's natural landscapes.
November : Enjoy the quieter side of Madeira and the wine harvest festivities, ideal for food lovers.
December : Get into the festive spirit with Madeira's famous Christmas lights and New Year's Eve fireworks.
January : Experience the tranquility of post-holiday Madeira, ideal for enjoying its natural beauty without the crowds of tourists.

Online editor at Rough Guides, specialising in travel content. Passionate about creating compelling stories and inspiring others to explore the world.

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2024 Federal Budget analysis

On April 16, 2024, the Deputy Prime Minister and Minister of Finance, Chrystia Freeland, presented the government’s budget. The budget:

increases the capital gains inclusion rate from 1/2 to 2/3, effective June 25, 2024 (up to $250,000 of annual gains for individuals will continue to benefit from the 1/2 inclusion rate)
raises the lifetime capital gains exemption to $1.25 million and introduces a new 1/3 inclusion rate for up to $2 million of certain capital gains realized by entrepreneurs
confirms previously announced alternative minimum tax proposals effective January 1, 2024, but softens the impact of these proposals on charitable donations
provides design and implementation details for the clean electricity investment tax credit
introduces accelerated capital cost allowance (CCA) for, and relief from interest deductibility limitations for debt incurred to fund the construction of, certain purpose-built rental housing
provides immediate expensing for the cost of certain patents and computer equipment and software
gives the Canada Revenue Agency (CRA) additional information gathering powers

This Tax Insights discusses these and other tax initiatives proposed in the budget.

Tax measures

Capital gains inclusion rate.

Lifetime Capital Gains Exemption

Canadian Entrepreneurs’ Incentive

Alternative Minimum Tax

Employee Ownership Trust Tax Exemption

Volunteer firefighters tax credit and search and rescue volunteers tax credit, mineral exploration tax credit for flow-through share investors.

Canada Child Benefit

Disability Supports Deduction

Charities and qualified donees.

Home Buyers’ Plan

Qualified Investments for Registered Plans

Deduction for tradespeople’s travel expenses, indigenous child and family services settlement, clean electricity investment tax credit, ev supply chain investment tax credit, clean technology manufacturing investment tax credit.

Accelerated Capital Cost Allowance

Interest Deductions and Purpose-Built Rental Housing

Taxing vacant lands to incentivize construction, confronting the financialization of housing, halal mortgages, non-compliance with information requests, synthetic equity arrangements, mutual fund corporations, canada carbon rebate for small business, avoidance of tax debts, reportable and notifiable transactions penalty, manipulation of bankrupt status.

Scientific Research and Experimental Development

International

Crypto-asset reporting, withholding for non-resident service providers, international tax reform.

Extending GST Relief to Student Residences

GST/HST on Face Masks and Face Shields

Previously announced, personal tax measures.

The budget proposes to increase the capital gains inclusion rate from 1/2 to:

2/3 for dispositions after June 24, 2024 for corporations and trusts, and
2/3 for the portion of capital gains realized after June 24, 2024 in excess of an annual $250,000 threshold for individuals

The $250,000 annual threshold would apply to capital gains realized by an individual, either directly or indirectly via a partnership or trust, net of:

current year capital losses
capital losses of other years applied to reduce current year capital gains, and
capital gains in respect of which the Lifetime Capital Gains Exemption (LCGE), the proposed Employee Ownership Trust Exemption or the proposed Canadian Entrepreneurs’ Incentive is claimed

As a result, the following rates will apply to capital gains earned by individuals in excess of the $250,000 threshold who are subject to the top marginal income tax rate (i.e. on taxable income exceeding: $355,845 in Alberta, $252,752 in British Columbia, $1,103,478 in Newfoundland and Labrador, $500,000 in the Yukon and $246,752 in all other jurisdictions).

The budget also proposes to decrease the stock option deduction to 1/3 to align with the new capital gains inclusion rate. Individuals would continue to benefit from a deduction of 1/2 of the taxable benefit up to a combined $250,000 for both employee stock options and capital gains.

The inclusion rate for net capital losses carried forward and applied against capital gains will be adjusted to reflect the inclusion rate of the capital gains being offset.

Transitional rules will apply to taxation years that begin before June 25, 2024 and end after June 24, 2024 such that capital gains realized before June 25, 2024 would be subject to the 1/2 inclusion rate and capital gains realized after June 24, 2024 (net of any losses) would be subject to a 2/3 inclusion rate. The $250,000 threshold will not be prorated for individuals in 2024 and will apply only against capital gains incurred after June 24, 2024.

Additional details will be provided in the coming months.

Earning capital gains through a Canadian-controlled private corporation (CCPC)

In most jurisdictions, the increase in the capital gains inclusion rate makes it less attractive for individuals to earn capital gains in excess of $250,000 through a CCPC instead of directly. The Appendix shows the resulting income tax deferral (prepayment) and the tax cost for an individual who realizes capital gains in excess of $250,000 and pays tax at the top tax rate.

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Lifetime Capital Gains Exemption (LCGE)

The budget proposes to increase the LCGE on eligible capital gains from $1,016,836 to $1,250,000 for dispositions that occur after June 24, 2024. The indexing of the LCGE to inflation will resume in 2026.

The budget introduces the Canadian Entrepreneurs’ Incentive, which will reduce the taxes on capital gains from the disposition of shares by eligible individuals which meet the following conditions:

at the time of the sale the share was a share of a small business corporation owned directly by an individual
used principally in an active business carried on primarily in Canada by the CCPC or a related corporation
certain shares or debts of connected corporations, or
a combination of these assets
the individual was a founding investor and the individual held the share for a period of five years prior to the disposition
at all times since the share subscription until the time immediately before the sale, the individual directly owned shares with a fair market value (FMV) of more than 10% of the FMV of all of the issued and outstanding shares of the corporation and shares entitling the individual to more than 10% of the votes
throughout the five year period before the disposition the individual was actively engaged in a regular, continuous and substantial basis in the activities of the business
the share does not represent a direct or indirect interest in a professional corporation, a corporation whose principal asset is the reputation or skill of one or more employees, or a corporation that carries on certain types of businesses including a business operating in the financial, insurance, real estate, food and accommodation, arts, recreation, or entertainment sector, or providing consulting or personal care services
the share must have been obtained for fair market value consideration

The incentive would provide a capital gains inclusion rate of one half of the prevailing inclusion rate on up to $2 million in capital gains per individual during their lifetime. The $2 million limit will be phased in over 10 years by increments of $200,000 per year reaching $2 million by January 1, 2034.

Applying the proposed 2/3 inclusion rate would result in an inclusion rate of 1/3 for qualifying dispositions. This will apply in addition to the LCGE.

This measure would apply to dispositions that occur after December 31, 2024.

Alternative Minimum Tax (AMT)

The 2023 budget announced amendments to change the calculation of the AMT. Draft legislative proposals were released for consultation in the summer of 2023. (For more information, see our Tax Insights “ Proposed changes to the alternative minimum tax: How will it affect individuals and trusts ”.)

The budget proposes to revise the proposed charitable donation tax credit claim to allow individuals to claim 80% when calculating AMT (as opposed to the previously proposed 50%).

The budget also proposes additional amendments to the AMT proposals including:

allowing deductions for the Guaranteed Income Supplement, social assistance and workers compensation payments
fully exempting employee ownership trusts (EOTs) from the AMT, and
allowing certain disallowed credits under the AMT to be eligible for the AMT carry-forward (i.e. the federal political contribution tax credit, investment tax credits (ITCs), and labour-sponsored funds tax credit)

The amendments would apply to taxation years that begin after December 31, 2023.

The budget also proposes certain technical amendments to the AMT legislative proposals to exempt certain trusts for the benefit of Indigenous groups.

The 2023 budget proposed tax rules to create EOTs. The 2023 Fall Economic Statement proposed to exempt $10 million of capital gains on the sale of a business to an EOT subject to certain conditions.

The budget introduces the conditions for this exemption. The exemption will be available to an individual (other than a trust) on the sale of a business to an EOT where the following conditions are met:

the individual, a personal trust of which the individual is a beneficiary, or a partnership in which the individual is a member, disposes of shares of a corporation that is not a professional corporation
the transaction is a qualifying business transfer (as defined in the proposed rules for EOTs) in which the trust acquiring the shares is not already an EOT or a similar trust with employee beneficiaries
throughout the 24 months immediately prior to the qualifying business transfer, the transferred shares were exclusively owned by the individual claiming the exemption, a related person, or a partnership in which the individual is a member; and over 50% of the FMV of the corporation’s assets were used principally in an active business
at any time prior to the qualifying business transfer, the individual (or their spouse or common-law partner) has been actively engaged in the qualifying business on a regular and continuous basis for a minimum period of 24 months
immediately after the qualifying business transfer, at least 90% of the beneficiaries of the EOT are resident in Canada

Where multiple individuals dispose of shares to an EOT as part of a qualifying transfer and meet the conditions above, they may each claim an exemption, however the total exemption in respect of the sale cannot exceed $10 million. The individuals would have to agree on the allocation of the exemption.

If an EOT has a disqualifying event within 36 months of the transfer, the exemption claim will be retroactively denied. If this occurs more than 36 months after a transfer the EOT will be deemed to realize a capital gain equal to the total exempt capital gains. A disqualifying event would result where an EOT loses its status as an EOT or if less than 50% of the FMV of the qualifying business shares is attributable to assets used principally in an active business at the beginning of two consecutive years of the corporation.

The EOT, any corporation owned by the EOT that acquired the transferred shares, and the individual will need to elect to be jointly and severally, or solitarily liable for any tax payable by the individual as a result of an exemption being denied due to a disqualifying event occurring during the first 36 months.

For the purposes of the AMT calculation the capital gain on the transfer would be subject to an inclusion rate of 30% (consistent with the inclusion rate for capital gains eligible for the LCGE).

An individual’s normal reassessment period as it relates to this exemption is proposed to be extended by an additional three years.

The budget also proposes to expand qualifying business transfers to include the sale of shares to a workers cooperative corporation, provided it meets certain conditions.

These measures will apply to qualifying dispositions of shares that occur between January 1, 2024 through December 31, 2026.

The budget proposes to double the volunteer firefighters tax credit and the search and rescue volunteers tax credit to $6,000 for the 2024 and subsequent taxation years; this increases the maximum annual tax savings to $900.

The budget proposes to extend the eligibility for this credit for an additional year, so that it will apply to flow-through share agreements entered into before April 1, 2025.

Canada Child Benefit (CCB)

A CCB recipient is no longer eligible to claim the CCB in respect of a child in the month following the child’s death. The budget proposes to extend eligibility for the CCB to six months after the child’s death, provided the individual continued to be eligible for the CCB.

The budget proposes to extend the list of expenses recognized for the disability supports deduction.

It also provides that expenses for service animals, as defined under the medical expense tax credit (METC) rules, will be recognized under the disability supports deduction. The individual will choose whether to claim under the METC or the disability supports deduction.

A foreign charity may register as a qualified donee for a 24-month period where it received a gift from His Majesty in right of Canada and it is pursuing certain activities in the national interest of Canada. The budget proposes to extend the eligibility of a foreign charity to be considered a qualified donee from 24 months to 36 months. The foreign charity would also be required to submit an annual information return to the CRA that would be made publicly available. The extension will apply to foreign charities registered after April 16, 2024. The reporting requirements will apply to taxation years beginning after April 16, 2024.

The budget also proposes to simplify the issuance of official donation receipts by removing certain requirements.

Home Buyers’ Plan (HBP)

To help first-time home buyers, the budget proposes to:

increase, from $35,000 to $60,000, the amount that an eligible home buyer can withdraw from their Registered Retirement Savings Plan (RRSP) under the HBP, without subjecting the withdrawal to tax, to buy or build a qualifying home (i.e. a first home or a home for a specified disabled individual), effective for the 2024 and subsequent calendar years, for withdrawals made after April 16, 2024
temporarily extend the repayment grace period by three years, to five years, under the HBP, so that eligible home buyers who withdraw from their RRSP between January 1, 2022 and December 31, 2025 will have up to five years before they need to start repayments to their RRSP

Registered plans (RRSPs, Registered Retirement Income Funds, Tax-Free Savings Accounts, Registered Education Savings Plans, Registered Disability Savings Plans, First Home Savings Accounts, and Deferred Profit Sharing Plans) can invest only in qualified investments for those plans. Qualified investments include mutual funds, publicly traded securities, government and corporate bonds and guaranteed investment certificates. Over the years the qualified investment rules have been expanded to include additional investments for certain plans and to reflect the introduction of new types of plans, but there are inconsistencies and the qualified investment rules are difficult to understand in some cases.

Specific issues are currently under consideration. Stakeholders are invited to submit comments by July 15, 2024 as to how the qualified investment rules can be modernized on a prospective basis to improve the clarity and coherence of the registered plans regime.

Eligible tradespeople and apprentices in the construction industry are currently able to deduct up to $4,000 in eligible travel and relocation expenses per year by claiming the labour mobility deduction for tradespeople. A private member’s bill (Bill C-241) was introduced to enact an alternative deduction for certain travel expenses of tradespeople in the construction industry, with no cap on expenses, retroactive to the 2022 taxation year.

The budget announces that the government will consider bringing forward amendments to the Income Tax Act (ITA) to provide a single, harmonized deduction for tradespeople’s travel that respects the intent of Bill C-241.

The budget proposes to amend the ITA to exclude from taxation the income of the trusts established under the First Nations Child and Family Services, Jordan’s Principle, and Trout Class Settlement Agreement. This will also ensure that payments received by class members as beneficiaries of the trusts will not be included when computing income for federal income tax purposes.

This measure will apply to the 2024 and subsequent taxation years.

Business tax measures

The 2023 budget proposed a refundable ITC for clean electricity, equal to 15% of the capital cost of eligible property. The 2024 budget provides the design and implementation details of the ITC, including the eligibility criteria. It also includes special rules for property that generates electricity from natural gas with carbon capture and property used to transmit electrical energy between provinces or territories, as well as details of the compliance and recovery process.

The ITC will be available only to eligible Canadian corporations, which are defined as:

taxable Canadian corporations and pension investment corporations
provincial and territorial Crown corporations (subject to additional requirements)
corporations owned by municipalities or Indigenous communities

Property eligible for the ITC includes equipment used to generate electricity from:

solar, wind or water energy (certain class 43.1 property, but hydroelectric installations would not be subject to a capacity limit)
concentrated solar energy (as defined for the purposes of the proposed clean technology ITC)
nuclear fission, including heat generating equipment (as defined for the purposes of the proposed clean technology ITC, without the generating capacity limits and other certain requirements of that credit)
geothermal energy, including heat generating equipment, if it is used exclusively for that purpose (excluding equipment that is part of a system that extracts fossil fuel for sale)
specified waste materials, as part of a system

Eligible property also includes equipment that is:

stationary electricity storage equipment and equipment used for pumped hydroelectric energy storage (excluding any that uses a fossil fuel in operation)
part of an eligible natural gas energy system (special rules apply)
used for transmission of electricity between provinces and territories (special rules apply)

Previously proposed labour requirements must be met to qualify for the 15% ITC, otherwise a 5% ITC is available. The ITC will be subject to potential repayment obligations, repayable in proportion to the FMV of the particular property when it has been converted to an ineligible use, exported from Canada, or disposed of.

The ITC will be available for new eligible property (i.e. has not been used for any purposes before its acquisition) that is acquired and becomes available for use after April 15, 2024 and before 2035 in respect of projects that did not begin construction before March 28, 2023.

The budget introduces the EV supply chain ITC, equal to 10% of the cost of buildings used in Canada in the following electric vehicle supply chain segments:

electric vehicle assembly
electric vehicle battery production
cathode active material production

To qualify for the ITC, the taxpayer (or member of a group of related taxpayers) must claim the clean technology manufacturing ITC (CTMITC) in all three of the segments (or must claim the CTMITC in two of the three segments and hold at least a qualifying minority interest in an unrelated corporation that claims the CTMITC in the third segment – the building costs of the unrelated corporation would also qualify for the new ITC).

The ITC is effective for property that is acquired and becomes available for use after December 31, 2023. The ITC will be reduced to 5% for 2033 and 2034 and 0% after 2034. Design and implementation details of the ITC will be provided in the 2024 Fall Economic Statement.

The 2023 budget proposed a clean technology manufacturing ITC, and draft legislative proposals were released in December 2023. The 2024 budget proposes to update the clean technology manufacturing ITC for production of qualifying minerals (such as copper, nickel, cobalt, lithium, graphite and rate earth elements) that occur at polymetallic projects (i.e. projects engaged in the production of multiple minerals) by:

clarifying that the value of qualifying materials will be used as the appropriate output metric when assessing the extent to which property is used (or expected to be used) for qualifying mineral activities producing qualifying materials
modifying eligible expenditures to include investments in eligible property used in qualifying mineral activities that are expected to produce primarily qualifying materials at mine or well sites, including tailing ponds and mills located at these sites (50% or more of the financial value of the output comes from qualifying materials)

A safe harbour rule will apply to the recapture rule for all qualifying mineral activities, to mitigate against the effects of mineral price volatility on the potential recapture of the ITC, the details of which will be provided at a later date.

Accelerated Capital Cost Allowance (CCA)

Purpose-built rental housing.

The budget provides an accelerated CCA of 10% for new eligible purpose-built rental projects that begin construction after April 15, 2024 and before January 1, 2031, and are available for use before January 1, 2036.

Eligible property will be new purpose-built rental housing that is a residential complex:

with at least four private apartment units, or 10 private rooms or suites, and
in which at least 90% of residential units are held for long-term rental

The Accelerated Investment Incentive (AII), which suspends the half-year rule, will continue to apply to eligible property put in use before 2028. The accelerated CCA will not apply to renovations of existing residential complexes, but new additions to an existing structure will be eligible. Projects that convert existing non-residential real estate into a residential complex will be eligible.

Productivity-enhancing assets

The budget provides immediate expensing (i.e. a 100% first-year CCA deduction) for property that is acquired after April 15, 2024 and becomes available for use before January 1, 2027, for the following CCA classes of assets:

class 44 (patents or rights to use patented information for a limited or unlimited period)
class 46 (data network infrastructure equipment and related systems software)
class 50 (general-purpose electronic data-processing equipment and systems software)

The accelerated CCA will be available only for the year in which the property becomes available for use. For a short taxation year, the accelerated CCA must be prorated and will not be available in the following taxation year. Property that becomes available for use after 2026 and before 2028 will continue to benefit from the AII.

Property that has been used (or acquired for use) for any purpose before it is acquired by the taxpayer will be eligible for the accelerated CCA only if both of the following conditions are met:

neither the taxpayer nor a non-arm’s length person previously owned the property, and
the property has not been transferred to the taxpayer on a tax-deferred “rollover” basis

The excessive interest and financing expenses limitation (EIFEL) rules restrict a Canadian taxpayer’s deductions for interest and financing expenses, based upon a percentage of its “tax-EBITDA” (i.e. its taxable income, adjusted for items such as interest expenses, depreciation and amortization). For a discussion of the EIFEL rules, see our Tax Insights “ Bill C-59 ─ Excessive interest and financing expenses limitation (EIFEL) regime .” The EIFEL rules currently include a single sector-specific exemption, for certain interest and financing expenses relating to public-private partnership (P3) infrastructure projects. The budget proposes to extend this election, on an elective basis, for certain interest and financing expenses relating to arm’s length financing that is used to build or acquire certain purpose-built rental housing located in Canada. This exemption will be effective for taxation years beginning after September 30, 2023, consistent with the EIFEL rules more generally. However, this exemption will be available only for expenses incurred before January 1, 2036.

The government is concerned that some landowners are holding residentially zoned vacant land as a speculative investment. The budget announces that the government will consider introducing a new tax on residentially zoned vacant land to spur development. The government will launch consultations later this year.

In March 2024, the government began consultations on how federal policies can better support the needs of all Canadians seeking to become homeowners. The government will provide an update in the 2024 Fall Economic Statement.

The budget announces the government’s intention to restrict the acquisition of existing single-family homes by very large corporate investors. The government will consult in the coming months and provide further details in the 2024 Fall Economic Statement.

The budget announces that the government is exploring new measures to expand access to alternative financing products for home purchasers, such as halal mortgages. These measures could include changes in the tax treatment of these products or a new regulatory regime for financial service providers, while ensuring adequate consumer protections are in place.

The budget proposes several amendments to the CRA’s information gathering provisions in the ITA, with the intent of enhancing the efficiency and effectiveness of tax audits and facilitating the collection of tax revenues on a timelier basis. These changes include:

allowing the CRA to issue a new type of notice, referred to as a “notice of non-compliance” and to levy a monetary penalty
permitting the CRA to specify that any required information (oral or written) or documents be provided under oath or affirmation
imposing a penalty when the CRA obtains a compliance order against a taxpayer, and
extending the stop the clock rules (which suspend the counting of days in the assessment limitation period), so that these rules apply when a taxpayer seeks judicial review of any requirement or notice issued to the taxpayer by the CRA in relation to the audit and enforcement process, and during any period that a notice of non-compliance is outstanding

Analogous amendments are also proposed to other federal tax statutes administered by the CRA. The budget also proposes certain technical amendments to ensure the rules meet their policy objectives.

These amendments would come into force upon royal assent of the enacting legislation.

The ITA allows a corporation to deduct the amount of any dividends received on a share of a corporation resident in Canada, subject to certain limitations.

One of these limitations is an anti-avoidance rule that denies the dividend received deduction in connection with synthetic equity arrangements. Synthetic equity arrangements include arrangements in which a person receives a dividend on a share, but all or substantially all of the risk of loss and opportunity for gain or profit (the “economic exposure”) in respect of the share are provided to another person.

Where a taxpayer enters into a synthetic equity arrangement in respect of a share, the taxpayer is generally obligated to compensate the other person for the amount of any dividends paid on the share. This compensation payment may result in a tax deduction for the taxpayer in addition to the dividend received deduction. Unless the anti-avoidance rule applies to deny the dividend received deduction, a tax loss would generally arise as a result of the two deductions.

The anti-avoidance rule incorporates certain exceptions, including where the taxpayer establishes that no tax-indifferent investor has all or substantially all of the economic exposure in respect of the share. An associated exception is also available for synthetic equity arrangements traded on a derivatives exchange.

The budget proposes to remove the tax-indifferent investor exception (including the exchange traded exception) to the anti-avoidance rule. This measure would prevent taxpayers from claiming the dividend received deduction for dividends received on a share in respect of which there is a synthetic equity arrangement.

This measure would apply to dividends received after December 31, 2024.

A mutual fund is a type of investment vehicle that allows investors to pool their money and invest in a portfolio of investments without purchasing the investments directly. A mutual fund corporation is a mutual fund organized as a corporation that meets certain conditions set out in the ITA.

The ITA includes special rules for mutual fund corporations that facilitate conduit treatment for investors (shareholders). For example, these rules generally allow capital gains realized by a mutual fund corporation to be treated as capital gains realized by its investors. In addition, a mutual fund corporation is not subject to mark-to-market taxation and can elect capital gains treatment on the disposition of Canadian securities.

To qualify as a mutual fund corporation under the ITA, a corporation must satisfy several conditions, including that it must be a “public corporation”. A corporation can meet this condition if a class of its shares is listed on a designated stock exchange in Canada. A corporation that is controlled by a corporate group may satisfy this condition, and qualify as a mutual fund corporation, even though it is not widely held. The government is concerned that this could allow a corporate group to use a mutual fund corporation to benefit from the special rules available to these corporations in an unintended manner.

Although the government believes this planning can be challenged based on existing rules in the ITA, the budget proposes specific amendments to the ITA to preclude a corporation from qualifying as a mutual fund corporation where it is controlled by or for the benefit of a corporate group (including a corporate group that consists of any combination of corporations, individuals, trusts, and partnerships that do not deal with each other at arm’s length). Exceptions would be provided to ensure that the measure does not adversely affect mutual fund corporations that are widely held pooled investment vehicles.

This measure would apply to taxation years that begin after 2024.

The budget introduces the Canada Carbon Rebate for Small Business, to return a portion of the federal backstop pollution pricing fuel charge proceeds collected from a province. This will be an automatic refundable tax credit for CCPCs with less than 500 employees in Canada in the calendar year in which the fuel charge begins. The tax credit in respect of the 2019-20 to 2023-24 fuel charge years will be available to a CCPC that files a tax return for its 2023 taxation year by July 15, 2024 (with similar timelines for future fuel charge years).

The tax credit amount:

is determined for each applicable province in which the eligible corporation had employees in the calendar year in which the fuel charge year begins; and
is equal to the number of persons employed by the eligible corporation in the province in that calendar year multiplied by a payment rate specified by the Minister of Finance for the province for the corresponding fuel charge year

The ITA includes an anti-avoidance rule that is intended to prevent taxpayers from avoiding payment of their tax liabilities by transferring their assets to non-arm’s length persons. The effect of this tax debt avoidance rule is to make the transferee jointly and severally, or solidarily, liable with the transferor for the transferor’s tax debts, to the extent that the value of the property transferred exceeds the amount of consideration given by the transferee for the property.

The ITA contains a number of rules that address various planning techniques employed by taxpayers attempting to circumvent the tax debt avoidance rule, as well as a penalty for those who engage in, participate in, assent to, or acquiesce in planning activity that they know, or would reasonably be expected to know, is tax debt avoidance planning.

The budget includes a new specific measure to address tax debt avoidance planning (although the government believes this planning can also be challenged based on existing rules in the ITA). The measure would apply in the following circumstances:

there has been a transfer of property from a tax debtor to another person
as part of the same transaction or series of transactions, there has been a separate transfer of property from a person other than the tax debtor to a transferee that does not deal at arm’s length with the tax debtor, and
one of the purposes of the transaction or series is to avoid joint and several, or solidary, liability

Where these conditions are met, the property transferred by the tax debtor would be deemed to have been transferred to the transferee for the purposes of the tax debt avoidance rule. This would ensure that the tax debt avoidance rule applies in situations where property has been transferred from a tax debtor to a person and, as part of the same transaction or series, property has been received by a non-arm’s length person. The penalty applicable to those who participate in tax debt avoidance planning would also be extended to this proposed new rule.

In many cases, tax debt avoidance planning is facilitated by a planner who receives a significant fee, which is effectively funded by a portion of the avoided tax debt. The courts have held that a taxpayer who engages in tax debt avoidance planning is normally not jointly and severally, or solidarily, liable for the portion of the tax debt that has effectively been retained by the planner as a fee. The budget proposes that taxpayers who participate in tax debt avoidance planning be jointly and severally, or solidarily, liable for the full amount of the avoided tax debt, including any portion that has effectively been retained by the planner.

Similar amendments would be made to comparable provisions in other federal statutes.

These measures would apply to transactions or series of transactions that occur after April 15, 2024.

The ITA includes a general rule providing that a person who fails to file or make a return or comply with certain specified rules is guilty of an offence, and liable to penalties of up to $25,000 and imprisonment for up to a year. The mandatory disclosure rules in the ITA also include specific penalties that apply in these circumstances, making the application of this general penalty provision unnecessary.

The budget therefore proposes to remove from the scope of the general penalty provision the failure to file an information return in respect of a reportable or notifiable transaction under the mandatory disclosure rules.

This amendment would be deemed to have come into force on June 22, 2023, which is the day the enhanced mandatory disclosure rules received royal assent.

Under the ITA, losses and other tax attributes that arise from expenditures for which a taxpayer did not ultimately bear the cost are generally not recognized. The ITA contains a set of debt forgiveness rules that apply where a commercial debt is settled for less than its principal amount. These rules generally reduce tax attributes by the amount of debt that is forgiven and, where tax attributes have been fully reduced, the rules cause an income inclusion equal to half of the remaining forgiven amount. The ITA also contains a rule that entitles an insolvent corporation to a corresponding deduction to offset all or part of an income inclusion from the debt forgiveness rules.

Bankrupt taxpayers are generally excluded from these debt forgiveness rules. Instead, a separate loss restriction rule applies to extinguish the losses of bankrupt corporations that have received an absolute order of discharge.

The government is concerned that some taxpayers have sought to manipulate the bankrupt status of an insolvent corporation, with a view to benefiting from the exception in the debt forgiveness rules while also avoiding the loss restriction rule applicable to bankrupt corporations. This planning seeks to preserve the losses and other tax attributes of the insolvent corporation (which would otherwise be eliminated upon the forgiveness of its debts), so that these attributes can be acquired and used by a profitable corporation. This planning is the subject of a designated transaction under the notifiable transactions element of the mandatory disclosure rules.

Although the government believes that manipulation of bankrupt status can be challenged based on existing rules in the ITA, the budget proposes a specific legislative measure to address this issue: repealing the exception to the debt forgiveness rules for bankrupt corporations and the loss restriction rule applicable to bankrupt corporations. This change would subject bankrupt corporations to the general rules that apply to other corporations whose commercial debts are forgiven. The bankruptcy exception to the debt forgiveness rules would remain in place for individuals. While bankrupt corporations would be subject to the reduction of their loss carryforward balances and other tax attributes upon debt forgiveness, as insolvent corporations they could qualify for relief from the debt forgiveness income inclusion rule provided under the existing deduction for insolvent corporations.

These proposals would apply to bankruptcy proceedings that are commenced on or after April 16, 2024.

Scientific Research and Experimental Development (SR&ED)

The government launched a consultation on the existing SR&ED tax incentives on January 31, 2024, which closed on April 15, 2024. The budget announces a second phase of consultations, to focus on specific policy parameters, explore how Canadian public companies could become eligible for the enhanced SR&ED ITC and inform how additional funding announced by the budget can support future enhancements to the SR&ED program. Further details of the consultation will be released on the Department of Finance Canada website at a later date.

International tax measures

The Organisation for Economic Co-operation and Development (OECD) has developed a framework for the automatic exchange of tax information relating to transactions in crypto-assets, the Crypto-Asset Reporting Framework (CARF). The budget proposes to implement the CARF in Canada. The new reporting rules will apply to crypto-asset service providers that are resident in Canada, or carry on business in Canada, and that provide services effectuating exchange transactions in crypto-assets. These service providers will need to report certain information regarding their customers and crypto-asset transactions. The budget also includes proposed amendments to the Canadian rules implementing the OECD’s Common Reporting Standard, including changes relating to electronic money products and central bank digital currencies. These measures will apply to 2026 and subsequent calendar years.

A person who makes a payment to a non-resident for services rendered in Canada is currently required to withhold 15% of the payment and remit that amount to the CRA. This is intended to serve as a prepayment of tax that the non-resident may ultimately owe in Canada. Certain non-residents do not owe Canadian tax for these services, e.g. due to exemptions in tax treaties, or exemptions for specific activities like international shipping. In these circumstances, the CRA may provide an advance waiver from the withholding obligation for specific transactions, or the non-residents may apply for refunds of amounts that have already been withheld. The budget proposes to give the CRA legislative authority to grant single waivers that cover multiple transactions occurring over a specific time period, where certain conditions are satisfied. This measure will take effect upon royal assent of the enacting legislation.

The OECD/G20 Inclusive Framework on Base Erosion and Profit Shifting has developed a two-pillar plan to reform the international tax system, as part of the “BEPS 2.0” initiative. On October 8, 2021, Canada and 135 other countries in the Inclusive Framework committed to adopt this plan (for a discussion on that commitment, see our Tax Insights “ The new international tax framework and Canada’s digital services tax ”). The budget provides an update on the two pillars of this international tax reform initiative.

Pillar One will introduce new rules for allocating taxing rights between countries to address challenges raised by the digital economy. These rules will generally apply to multinational enterprises (MNEs) with annual revenue above €20 billion and profit margins above 10%. The right to tax a portion of these MNEs’ profits will be reallocated to market countries (i.e. the countries where the MNEs’ users and customers are located).

The budget reaffirms Canada’s commitment to bringing Pillar One into effect as soon as a critical mass of countries is willing to participate. In the meantime, Canada is moving ahead with its plan to enact the Digital Services Tax (DST). Implementing legislation for the DST is currently before Parliament in Bill C-59. The DST will take effect beginning in calendar year 2024, with the first year covering taxable revenues earned since January 1, 2022. (For a discussion of the DST, see our Tax Insights “ Digital Services Tax: One step closer to becoming a reality .”)

Pillar Two will introduce a 15% global minimum tax. This tax will generally apply to MNEs with global revenues of at least €750 million. These MNEs will be required to compute their effective tax rate (ETR) in each country where they operate. If the ETR for a particular country is below 15%, a top-up tax will be imposed, to raise that ETR to 15% (this top-up tax may be reduced by a substance-based income exclusion, which is computed based on the payroll costs and net book value of tangible assets located in the jurisdiction). Draft legislative proposals for a Global Minimum Tax Act to implement the Pillar Two regime in Canada were released for public comment in August 2023 (for a discussion of those proposals, see our Tax Insights “ Canada releases draft Global Minimum Tax Act ”). The budget states that Canada is moving forward with this implementing legislation and intends to introduce it in Parliament soon.

Sales tax measures

Extending goods and services tax (gst) relief to student residences.

On September 14, 2023, the government announced that it would temporarily remove the GST from new purpose-built rental housing projects (i.e. apartment buildings, student housing and senior residences built specifically for long-term rental accommodation) by implementing an Enhanced (100%) GST Rental Rebate for new qualifying purpose-built rental housing projects (for more information, see our Tax Insights “ Enhanced GST rental rebate for rental apartments that begin construction after September 13, 2023 ").

To ensure that universities, public colleges and school authorities can also claim the Enhanced (100%) GST Rental Rebate for student residences that are built for short-term use, the budget proposes to amend the Excise Tax Act to allow them to apply the normal GST/Harmonized sales tax (HST) rules that apply to other builders (i.e. paying GST/HST on the final value of the building) in respect of new student housing projects.

The budget also proposes to relax the rebate conditions so that universities, public colleges and school authorities that operate on a not-for-profit basis (i.e. those that would currently qualify for the Public Service Body rebates under the GST/HST) can claim the 100% rebate in respect of any new student residence that they acquire or construct provided it is primarily for the purpose of providing a place of residence for their students.

The proposed measures would apply to student residences that begin construction after September 13, 2023 and before 2031, and that complete construction before 2036.

The budget proposes to repeal the temporary zero rating of certain face masks or respirators and certain face shields under the GST/HST for supplies made after April 30, 2024.

Previously Announced Measures

The budget confirms that the government will proceed with the following previously announced measures, as modified to take into account consultations, deliberations and legislative developments since their announcement or release:

legislative proposals released on December 20, 2023, which include measures relating to the clean hydrogen ITC, the clean technology manufacturing ITC, concessional loans and short-term rentals
legislative and regulatory proposals announced in the 2023 Fall Economic Statement, which include measures relating to the Canadian journalism labour tax credit, the expansion of eligibility for the clean technology and clean electricity ITC, the GST/HST joint venture election rules and the Underused Housing Tax
legislative and regulatory amendments to implement the Enhanced (100%) GST Rental Rebate for purpose-built rental housing announced on September 14, 2023
the carbon capture, utilization and storage and the clean technology ITCs and labour requirements related to certain “clean economy” ITCs
enhancing the reduced tax rates for zero-emission technology manufacturers
flow-through shares and the critical mineral exploration tax credit – lithium from brines
Retirement Compensation Arrangements
strengthening the Intergenerational Business Transfer framework
the income tax and GST/HST treatment of credit unions
a tax on repurchases of equity
modernizing the General Anti-Avoidance Rule
global minimum tax and DST
technical amendments to GST/HST rules for financial institutions
providing relief in relation to the GST/HST treatment of payment card clearing services
extending the quarterly duty remittance option to all licensed cannabis producers
revised Luxury Tax draft regulations to provide greater clarity on the tax treatment of luxury items
technical tax amendments to the ITA and the Income Tax Regulations
legislative amendments to implement changes discussed in the transfer pricing consultation paper released on June 6, 2023
tax measures announced in the 2023 budget, including the dividend received deduction by financial institutions
substantive CCPCs
technical amendments to the ITA and Income Tax Regulations
legislative amendments to implement the hybrid mismatch arrangements rules announced in the 2021 budget

The budget also reaffirms the government’s commitment to move forward, as required, with technical amendments to improve the certainty and integrity of the tax system.

Integration – Capital gains ($)

(taxation year ended December 31, 2024, and $10,000 of capital gains earned after June 24, 2024)

This table shows:

the income tax deferral (prepayment) if capital gains in excess of $250,000 are earned and retained in a corporation as opposed to being earned directly by an individual
the tax (cost) if the after-tax corporate income is paid out as a dividend to the shareholder in 2024

The table assumes:

the individual is in the top marginal tax rate
no capital gains deductions are available
the non-taxable portion of the capital gain is distributed as a tax-free capital dividend
the taxable dividend paid is sufficient to generate a full refund of refundable tax

Download a PDF

Tax Insights: 2024 Federal budget ─ Supporting housing, raising taxes

Dean Landry

National Tax Leader, PwC Canada

Tel: +1 416 815 5090

© 2018 - 2024 PwC. All rights reserved. PwC refers to the PwC network and/or one or more of its member firms, each of which is a separate legal entity. Please see www.pwc.com/structure for further details.

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