Can we time travel?

Question

Can we travel to the past and the future,theoritically it has been proven.

Answer 1

Eintein's relativity allows for a kind of time travel, but ONLY into the future.

Answer 2

you've seen the movie "back to the future"? it ha interesting concepts in it (obviously, there are loads of physics impossibilities in that movies, but a few ideas are correct): when you go in the past, you won't be able to go back to the same future. The simple fact that you were there changed a lot of things (even changing the weather by standing in the place you would be might change a few important things) therefore: you can't go in the past and come back to the place (timeline) you started from.
And that's only if traveling in the past is possible

travelling to the future, yuo do that all the time... no need for a complicated machine to do that.

Answer 3

G'day Fajer,

Thank you for your question.

No one has developed time travel as yet. Time travel is the concept of moving backward or forward to different points in time, in a manner analogous to moving through space. Additionally, some interpretations of time travel suggest the possibility of travel between parallel realities or universes.

Many in the scientific community believe that time travel is highly unlikely. This belief is largely due to Occam's Razor. Any theory which would allow time travel would require that issues of causality be resolved. What if one were to go back in time and kill one's own grandfather? Also, in the absence of any experimental evidence that time travel exists, it is theoretically simpler to assume that it does not happen. Indeed, Stephen Hawking once suggested that the absence of tourists from the future constitutes a strong argument against the existence of time travel—a variant of the Fermi paradox, with time travelers instead of alien visitors. However, assuming that time travel cannot happen is also interesting to physicists because it opens up the question of why and what physical laws exist to prevent time travel from occurring.

If you would like more information on this topic, you might want to read:

* Davies, Paul (1996). About Time. Pocket Books. ISBN 0684818221.
* Davies, Paul (2002). How to Build a Time Machine. Penguin Books Ltd. ISBN 0141005343.
* Gale, Richard M (1968). The Philosophy of Time. Palgrave Macmillan. ISBN 0333000420.
* Gott, J. Richard. Time Travel in Einstein's Universe: The Physical Possibilities of Travel Through Time. ISBN 0618257357.
* Gribbin, John (1985). In Search of Schrödinger's Cat. Corgi Adult. ISBN 0552125555.
* Nahin, Paul J. (2001). Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction. Springer-Verlag New York Inc.. ISBN 0387985719.
* Pagels, Heinz (1985). Perfect Symmetry, the Search for the Beginning of Time. Simon & Schuster. ISBN 0671465481.

I have attached some sources for your reference.

Regards

* Pickover, Clifford (1999). Time: A Traveler's Guide. Oxford University Press Inc, USA. ISBN 0195130960.
* Randles, Jenny (2005). Breaking the Time Barrier. Simon & Schuster Ltd. ISBN 0743492595.

Answer 4

I am truly sick of time travel shows, which are a lousy excuse for science fiction. But I digress..

One of our most prized fundamental thermodynamic laws is that energy is conserved.. it can be neither created or destroyed but only changed from one form to another. This includes mass/energy conversions as well. A traveler suddenly appearing in my study constitutes a violation of this law. Other laws such as conservation of electric charge would also be violated. I hates it.

You CAN propel your conscience into the distant future of earth by traveling near light speed around the stars whilst earth ages. Or, do a (not too) close orbit of a quiet supermassive black hole for a few of your hours, then pull out and check to see where earth's continents are.

Answer 5

Traveling at speeds close to light as well as hovering near the event horizon of a black hole slows down time relative to that individual, due to the warpage instituted be gravity. Time for eveyone else would flow normally, so it's not really time travel. One could theoretically create a worm hole that would similarly warp space-time, but such energies that are required are not acheiveable in this century.

Answer 6

Not yet. However flying faster than the speed of sound around the world in any direction is a form of time travel. We will not be able to time-travel before being able to break the speed of light and break the space-time fabric. We might cause more damage than is worth it indeed.

Answer 7

I don't believe in past time travel. Future time travel isn't a problem.

Answer 8

I wish cuz if we could Time Travel I would so go back in time in the year 1912 during the tragic sinking of Titanic!!!

Answer 9

You do that everyday! Right now we are traveling thru the past to the future! =)

Answer 10

i believe not, simply because time does not exist. everything happens in the same instance. this explains bells theorem, super string theory. and the list goes on and on. if you have the time (lol) i could prove this to you with some very lengthy equations. plus a whole lot of symbolic logic.