this post was submitted on 27 May 2025
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Explain Like I'm Five

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This never made any sense to me whatsoever.

I've see all the physicists (Michio Kaku, Stephen Hawking, Neil DeGrasse Tyson, etc.) explain this principle but it doesn't make sense. They say that if you were to go to the moon and back at a certain speed near the speed of light, you might return to Earth a thousand years into the future like what happened in Planet of the Apes. But if you were going at the speed of light, you would arrive at the time light takes to arrive there. Why the dip? What is being missed?

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[–] JackGreenEarth@lemm.ee 3 points 1 week ago

No, you would physiologically age at the same fast-forwarded time rate. Essentially, for you, less time would pass at the same time that more time passes for the outside world.