Is time travel possible?

[Troll_Whisperer]

ListerOfSmeg said:

Troll_Whisperer said:
Time travel happens all the time. Time is not set in stone. Because of relativity, objects at different relative speeds experience time differently, that's why GPS satellites don't work with ordinary clocks, they need to be adjusted accordingly.

We can travel to the future by approaching the speed of light, that makes our time go at different rates compare to other objects or beings. Light itself doesn't experience time, the moment something makes a photon and the moment that photon becomes something else (heat) are the same very moment from that photon's perspective.

Travelling back in time is another matter though. Perhaps it's theoretically possible when surpassing the speed of light? But that can't be done so I don't think travelling to the past is possible.

Sorry but no. We can live longer by approaching the speed of light relative to people not travelling the speed of light but that doesnt give us the ability to time travel. 
Time is aman made concept, so nothing besides man experiences it. we just relate it to other objects so no light isnt the only thing that doesnt experience time.

We can travel to other people's future, of course it would still be the present for us.