If time moves at diffrent rates in the universe, why would time travel be impossible?

Answer 1

If there are different times zones on hte earth, why can't we just go into another zone and say we travel through time?

Answer 2

If you could travel at the same time as other objects in the universe
then anytime you traveled it would always be relative to where you came form so for example if you left the earth and traveled to Mars and left on earth on July 15 2006 and were gone for 2 years our time
then if you looked at a calendar when you got to Mars you would see
that it was 2 years later because of the way the calendar doesn't change. You have changed but the date is still 2 years later. This is what Einstein was talking about with his theory of relativity. Everything is relative just like your time travel to Mars. It doesn't have to be Mars for this to work. You could pick almost anywhere
else except things in other galaxies and then the equations change because they are so far from here you can't use the same math. You would need Algebra and stuff to figure the time
differences. I took Algebra but it has been along time ago and I don't think they taught us about space travel then so I would have a hard time trying to calculate accurately enough to give you and easy answer.

Answer 3

First off, Time Travel is completely possible in our Universe according to our understanding of Physics, Relativity, the Many Worlds Theory, The Holographic Universe Theory and String Theory.

However, we're talking Relativity here, so lets just say that yes, the Universe IS INDEED travelling at different speed thru time throughout the universe depending on where the space-time gravity is at the moment we approach it, such as the event horizon of a black hole or a super dense star such as a neuton star, where 1 teaspoon would weight 1 billion pounds on earth. These massive stars warp both space and time around them, causing everything in their orbits to travel slower (including light) and (this theory has been proven with atomic clocks on an airplane and one stationary on earth. The one stationary on earth ran the same, while the one on the plane lost time - so we have empirical evidence of relativity). Atomic clocks lose like 1/10th a sec every decade, so this time lost was indisputable evidence of the Theory. When travelling near these supermassive objects any object coming back would be years out of synch with the time they left. While they would not have aged hardly at all.

Also, physicsts now accept that Times arrow may in fact run both forwards and backwards and the only reason we cannot remember the future is unknown.

http://www.fortunecity.com/emachines/e11/86/entropy.html#

Answer 4

Time moves at different rates because the speed of light always remains the same relative to a reference point. But if two reference points are moving at different speeds, and the speed of light is equal, the only thing that can change is time. This is why time travel is theoretically possible. As one approaches the speed of light, time slows down. When astronauts return to Earth, they have aged a fraction of a second less than people on Earth because they were traveling at a higher velocity. If one goes faster than the speed of light, he or she will theoretically move backwards in time. The problem is that it is theoretically impossible to travel faster than the speed of light. I hope that answers your question!

Answer 5

If you travel close to the speed of light, your clock moves slower. You could return to a spot in earth 15 minutes older, but the spot you returned to advanced 1 year.

If you want to define this as time travel (a fifteen-minute exercise that allowed you to find out what's going on a year from now), then time travel is theoretically possible.

There are practical limitations becasue you have to travel pretty fast in order to see a measurable effect, and we don't really know how to travel that fast. Also, the extreme forces of accelerating to those speeds could kill you. In other words, don't hold your breath.

Answer 6

There is no such thing as Time, no Cosmic Master Clock against which all other clocks can be compared. Time is nothing more than a human concept developed to separate events.

Time does NOT move at different rates in the universe. What humans call time only SEEMS to move at different rates when two or more observers moving at different velocities compare their clocks. If Albert moves away from Brutus at near the speed of light, and if Albert and Brutus could observe each others' clocks, Albert's clock would appear to be moving slower to Brutus than his own. But to Albert it would appear that Brutus's clock was moving faster than his own. Which clock is right? They both are because there's no Cosmic Master Clock against which they can be compared.

Answer 7

first of all, "time travel" is possible, we are always "traveling thru time", think about it. However, i get what you say. Because ALL information on time travel is COMPLETELY THEORETICAL, as it has never achieved (and scientifically proven and documented). If you want to know about time travel, how it could work, and some very interesting ideas, you should read this book. It is a great book, and it's not very hard to understand at all. Not only that, it is written very well.

http://www.amazon.com/gp/product/0618257357/sr=8-1/qid=1152927931/ref=sr_1_1/103-5832794-7615802?ie=UTF8

It is called "Time Travel in Einstein's Universe: The Physical Possibilities of Travel Through Time", and it is by Richard Gott.

Answer 8

Time travel is impossible because time is a human creation. The universe doesn't recognize that a particular event occured at 1PM, all that it would recognize is that a particular event occured.

Event travel could be possible, but time; no way

Answer 9

It's all relative. TIme travel in your own "frame of reference" is impossible. Theoretically, you could travel at near the speed of light to and from the earth and come back centuries later than you left. Time would have continued on as normal for you in your space craft, but more slowly relative to the earth. Is this time travel or just life extension? I call it life extension. It would, however, be impossible to return to earth BEFORE you left. because though time may be passing more slowly for you on your near light speed spacecraft, it is still moving forward, as is the time on earth, just at different rates.

Answer 10

Your premise is incorrect and has nothing to do with why would time travel be impossible.
Time travel foward is occuring as I type this out. Time travel backwards is possible in theory according to some but not possible in real life. Technology is not to that level yet and might not even be possible to reach that level.

Answer 11

Time travel isn't impossible. Time travel to the past is impossible. How do I know this?

Think about it. Have you ever met a chrononaut? Do you know anyone who has? Have you ever read about someone meeting one (in a credible source)? If time travel to the past was ever achieved, we'd already know.