Time reversal

Main Question or Discussion Point

Is it possible to reverse time?
According to special relativity, time slows down as one approaches the speed of light and completely stops when one travels at the speed of light, which is exactly $c$. Then if one travels faster than the speed of light, is it possible that time will reverse or rewind ?

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Staff Emeritus
2019 Award
One cannot travel faster than light.

Doug Huffman
Gold Member
Nor can time be reversed. Time is not space like.

I just proposed that in a hypothetical scenario, if one could travel faster than light speed then is it possible for time to get reversed ?

Doug Huffman
Gold Member
If, in your FTL time-vessel, you had broken a tea cup, when precisely would it reassemble itself? The arrow of time is the arrow of cause and effect.

Staff Emeritus