Question

what is proof of time travel

Answer 1

according to theory of relativity by Albert Einstein in 1905 he told that time travel is possible. only when one object that speed = gravitational force
one scientists told that it is possible to do when a rail track is surrounded to whole world but other reject this
hope o help

Answer 2

there are many evidences that say that time travel is possible and it has already happened there is an ionic footage which showed that a person was using a cell phone in Charlie chaplin time where there was no phone.

u can get many evidences in youtube by seeing the footages as well this is just an example what I gave