I'm asking this because there is a scifi book I'm reading, and in the book there's a scene where someone is communicating with a person in a spacecraft moving at lightspeed. I know their ability to communicate would probably not be possible, but let's just put that aside for a second. Hypothetically, if you could communicate with someone moving lightspeed, would the time dilation make it so that they would appear to be moving and speaking very slowly relative to you?

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[–] [S] 3 points 4 months ago

Oh I see. That makes sense. The fact that it's experiencing less time is why, relative to us, it's time seems to be running slower

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