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this post was submitted on 27 Apr 2026
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I don't actually know, but to my understanding...
Firstly it would be impossible because of the doppler effect and the fact that at these speeds you would go around the earth in about the same time it takes to say "Hello" , but if you ignore that:
At a difference of around 260,000 KM/S you could actually have a time dilation difference that would be perceived by the observer (the slow one) as 0.5x and anything said by the traveler would be heard by the observer in slow motion.
Again, I have no physics background, so...