Does time travel exist? If so, has there been any occurrence to prove its existence?
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Does time travel exist? If so, has there been any occurrence to prove its existence?
It is kind of dicey. Our current understanding of standard model physics doesn’t allow for backward time-travel scenarios. Stephen Hawking famously hosted a tongue-in-cheek welcome party for future visitors… And no one showed up. This does not mean that it is proved impossible, just that our understanding is limited and does not support it entirely yet. If travel faster than light were possible, time would effectively pass in reverse. Time travel forward is much more supportable, but the secrets of the fabric of space and time are being probed ever so slowly but surely by some of our finest people, so who knows what we will find out!
We can state for a fact that the astronauts that went to the moon traveled in time. When they arrived back on earth, they landed in the future. Admittedly it was only factions of a second in the future though. This is due to the theory of relativity where the time passes at different rates relative to the speed at which you travel through space. Due to the speed of the astronauts traveling to the moon and back, time passes more slowly relativity to time on earth. It can also be said in reverse, to the astronaut time passes faster on earth relative to the astronaut, so when they arrive back to earth they will arrive at some future time.