Can We Time Travel to Earth's Past and Future?

In summary, according to the interviewer, it is theoretically possible to go back in time, but doing so would violate the laws of physics and is therefore not something that is possible currently.
  • #1
41
0
hello all!

here is my question.
Is it theoretically possible to time travel to the Earth's future and it's past?

thx
 
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  • #2
As far as present-day understanding goes, no.

And the Earth's past is far away behind us in space. The whole solar system is traveling through space at hundreds of miles per second. To go back to yesterday you'd need a spaceship.
 
  • #3
To follow some error events. travel in time was right past time

to travel in time. that is happen as some past event perhaps , but the secret and rule is not clearn now. to move a particle is complex very in time dimension. so to move Earth it is very hard now. very hard.
 
  • #4
Time Travel ? No Way

Time Travel? is a popular theme in Sci-Fi movies and books
but unless you are a comic book character, I think it will never happen. Dr.
Kaku thinks the same thing I believe. I listen to the late night talk show on
AM radio :Coast to Coast AM and am constantly amazed at the stupid people
who call into George Noory with their goofy stories about paranormal sightings
and their observations of "Mysterious events" which are probably made up
stories or mistaken observations of common events. The latest thing reported
by the Monday thru Friday talk host :George Noory is that he will try and take a
TIME TRAVEL trip via a "Inventor he has contacted. Many people send him Email
and call him to advise him NOT to do this as if this is entirely POSSIBLE ! George
who seems to have only movie adventures as any scientific experience and
shows his lack of any real paranormal background by the questions he asks his
radio guests is replaced by ART BELL on the weekends who does have a fair
amout of smarts in this field.

I admit that I have only my opinions and no experience to say the above and
feel that Time Travel will remain only in Science fiction stories but then they said
that we would never travel to the Moon or if you traveled faster than 30 miles an
hour in a motorcar you would die because you could not breathe with the air
moving so fast past you...so perhaps I am wrong about Time Travel.

Another topic : The Star trek matter Transmitter? Now is that possible?
 
  • #5
Originally posted by andytran
hello all!

here is my question.
Is it theoretically possible to time travel to the Earth's future and it's past?

thx

The problem is that you can't say, 'Hey, what would happen if you could go faster than the speed of light?' because that's totally physically impossible. It's not possible to go faster than the speed of light, so the laws of physics can't possibly say what would happen if you imagine things that way in some hypothetical universe. Physics is a complete package: once you decide to ignore one physical law, you're ignoring them all.

You run into a similar problem when you ask 'What if I could divide by zero?' or 'What if I could build a perpetual motion machine?' or 'What if I went back in time and killed my grandfather before I was born?' There's no answer, because the question doesn't make any sense.

Of course, this doesn't bother the writers of Star Trek. They go faster than the speed of light every show and travel into the past like it's a trip to Disneyland. This brings up an interesting point, however: The idea of a space-warping engine is NOT entirely a bad one! Warping space would allow you to travel as if you were moving faster than light by changing the structure of the universe, at least temporarily. You would end up in a certain location much faster than if you traveled there the 'normal way,' kind of like a secret passage. Happily for relativity, you would STILL not actually be traveling faster than the speed of light in local space, so Einstein's 'speed limit' still holds.

The point is that though it's fun to think about and enjoy in science fiction, truly going faster than the speed of light is a violation of the laws of physics and therefore can not really be discussed by physics. I can't say time would reverse itself or not exist or anything because those aren't even options. It's like if I invited you out to dinner and you told me you absolutely couldn't come, but then I asked you whether you were going to have the soup or the salad!

This is from an interview with Carl Sagan. A NOVA specialist asked very intriguing questions that apply to your thread question above.
Q: Do you think that backwards time travel will ever be possible?
A: Such questions are purely a matter of evidence, and if the evidence is inconsistent or insufficient, then we withhold judgment until there is better evidence. Right now we're in one of those classic, wonderfully evocative moments in science when we don't know, when there are those on both sides of the debate, and when what is at stake is very mystifying and very profound.

If we could travel into the past, it's mind-boggling what would be possible. For one thing, history would become an experimental science, which it certainly isn't today. The possible insights into our own past and nature and origins would be dazzling. For another, we would be facing the deep paradoxes of interfering with the scheme of causality that has led to our own time and ourselves. I have no idea whether it's possible, but it's certainly worth exploring.

Today, we know that time travel need not be confined to myths, science fiction, Hollywood movies, or even speculation by theoretical physicists. Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future.

Angelus Silesius, a sixth-century philosopher and poet, thought the flow of time could be suspended by mental powers:

Time is of your own making;
its clock ticks in your head.
The moment you stop thought
time too stops dead.

If you can imagine, I think you can accomplish. That's my motto.
 

1. Can we really time travel to Earth's past and future?

The concept of time travel is a popular topic in science fiction, but it is still a topic that is heavily debated in the scientific community. The current understanding of physics does not allow for time travel in the traditional sense of traveling to a specific point in time. However, some theories, such as the theory of relativity, suggest that time can be manipulated in certain ways, but it is still a highly speculative concept.

2. Is it possible to travel to the past and change the course of history?

According to the theory of causality, any events that occur in the past have already influenced the present and cannot be changed. Therefore, it is not possible to travel to the past and change the course of history. However, some theories suggest that parallel universes could exist, where different versions of events occur, but this is still a highly debated topic.

3. Can we travel to the future and see what will happen?

The concept of traveling to the future is more plausible than traveling to the past. According to the theory of relativity, time can move at different rates for different objects, meaning that someone traveling at a high speed would experience time differently than someone standing still. This could potentially allow for time travel to the future, but it would require traveling at near the speed of light, which is currently not possible with our current technology.

4. Are there any time travel experiments being conducted?

There have been some experiments conducted to test the theory of relativity and its effects on time, such as the Hafele-Keating experiment in 1971. However, these experiments have not been able to prove or disprove the possibility of time travel. Some scientists are also exploring the concept of time travel through the use of wormholes, but this is still in the realm of theoretical physics.

5. Will we ever be able to time travel in the future?

It is impossible to say for certain if time travel will ever be possible in the future. While scientific advancements have allowed us to better understand the concept of time, it is still a highly complex and speculative topic. It is possible that with further advancements in technology and our understanding of physics, time travel could become a reality. However, it is also possible that it may never be possible due to the limitations of the laws of physics.

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