Verified answer

Relativity and time travel is based on the idea that a photon travels at the speed of light, so if scientist in japan discovered that a photon can'not travel faster than light, it's still travelling at the speed of light, and this still doesn't rule out time travel into the future,,, And has a low probablillity of badly affecting travelling into the past, because this is just one experiment... Some objects such as pions, or quantum entanglements have recorded speeds faster than light, .... When you look at the stars, your looking at the stars as they were in the past and when you see the moon, your seeing it as it was nearly two seconds ago in the past!,,,, photons apparently can exist symaltainiously in two places at once?,,,, Time travel might be real,,,

"However, if there are an infinite amount of parallel universes, then isn't there a universe in existence right now that is in the year 1956 exactly as it was in this universe's 1956?"

Well firstly, that is a very big if, and it involves an interpretation of quantum mechanics not shared by most physicists. Secondly, something is only deserving of the appellation "parallel universe" if nothing can travel between it and this universe.

Time travel can be possible but we dont have enough information, statistics, and people willing to risk their lives to see if it is possible. There probably is an infinite amount of universes and if you think about it there is think in a prospective way you find that a

universe just blow up, in a universe, inside the middle of a universe. (which if you think about it as an infinite amount of Universe)

Also if we were able to travel through dimensions then probably time traveling will be possible because we know dimensions are quite possible and there are theories that black holes and warp time can help us find out

hope this helps =)

I read that article and the statement that "since a photon cannot travel faster than the speed of light vindicates that time travel is impossible" is complete nonsense if you understand relativity.

I answered practically the same question in more detail here:

http://answers.yahoo.com/question/index;_ylt=AjpEE...

The premise is mistaken. We all travel in time but the problem is that we all seem to only move in one direction. But our relative motions may cause us to move through time at slightly different rates, or rather we would measure other people in motion relative to us as moving slower through time. In addition, we would observe that people in different gravitational fields as moving through time at different rates. For example, if you are on the ground, you would observe a clock on an airplane moving slower due to the motion of the airline and faster due to the smaller gravitational field. These effects have been measured using atomic clocks and found to agree with general relativity.