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 5 months ago (2 children)

the experience of moving at the speed of light would be instant teleportation with no subjective elapsed time

I thought time slows down when you approach the speed of light though

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  • [–] 14 points 5 months ago (1 child)

    Only in comparison to (relative to) others. A photon from the sun experiences no time at all between leaving the sun and landing in your eye but we perceive it as eight minutes.

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