Time travel to the future IS POSSIBLE?

Question

There are various ways in which a person could "travel into the future" in a limited sense: the person could set things up so that in a small amount of their own subjective time, a large amount of subjective time has passed for other people on Earth. For example, an observer might take a trip away from the Earth and back at relativistic velocities, with the trip only lasting a few years according to the observer's own clocks, and return to find that thousands of years had passed on Earth. It should be noted, though, that according to relativity there is no objective answer to the question of how much time "really" passed during the trip; it would be equally valid to say that the trip had lasted only a few years or that the trip had lasted thousands of years, depending on your choice of reference frame.

question is what do you think abt it

Answer 1

You are correct - there is no absolute measure of time. However, it would be possible and reasonably simple to determine the difference between the two measurements of time upon the return of the traveler. This could be done before his departure if the speeds and acceleration rates were predicted accurately.

I do not see this as time travel per se. You certainly could not return. It is just a way of using relativity to change your measurement of time as compared to the measurements of others. It is travel in spacetime.

ADDED:

If I could, I would like to correct a popular misconception demonstrated by johnandeileen's response - also caught by by hznfrst. Johnandeileen point out correctly that travel at relativistic speeds would result in linear shrinking in the direction of travel. However, they infer incorrectly that this would result in physical harm by compressing their internal organs. This is simply not true. The shortening occurs only as seen by the static observer, not in the traveler's frame of reference. To the traveler, all would appear normal, including effects on time, mass, and length - as long as he doesn't look outside. To those he passes at near lightspeed, he will be shorter - he will not just appear shorter - he will be measured as shorter, and his clocks will run slower, etc. But to him, everything in his little world will be the same, including his organs!

Answer 2

int that we've not had any viewers from the long run is lovely well. Then once more who in 1900 could have proposal in simply over part a century there could be persons jogging at the moon? The massive query is if it is feasible; whether it is feasible then we will be able to surely discover some way of doing it. It is POSSIBLE to ship persons out of the sun procedure to the closest big name - however on the second it's incredibly impractical (i.e. it could take hundreds and hundreds of years); we must discover out a option to make it realistic. There appears to be plenty of dialogue as as to if time journey is feasible or now not. One VERY fascinating test is happening in Edinburgh. They have slightly black field which generates 1s and 0s, and a pc attracts a graph of the occurence. You'd feel that it could be accurately 50% 0s a

Answer 3

Incorrect, at relativistic speeds the moving object shrinks in the direction of motion, your body would become paper thin, your organs would not function. That part of relativity I agree with but as far time dilation goes I have an argument against it. It is a four page document,if you are interested I will attach it to an e mail in my reply to you. This format does not permit attachments. [e-mail]

Answer 4

Correct, but what is the question?

PS to johnande...: The shrinkage in the direction of travel is only apparent to an outside observer, as is the slowing of time on the ship. Onboard the ship everything appears normal, and it's the outside that does strange things.

Answer 5

Have you read How to Build a Time Machine? (I can't remember who it's by.)
It's a really good book just jampacked with information.
Time travel is theoretically possible, but as far as I know no one has been willing to spend the billions of dollars necessary to test it.

Answer 6

since anything that happens from this moment would be a future event unless you die you will be traveling to the future.the past is a different story.

Answer 7

Wow, thanks for that information, but wait this is Y!A...not Yahoo! facts...HMMMMM.

Answer 8

ok