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If you were stationary, and talking to someone moving at lightspeed, would they appear to be speaking in slow motion due to time dilation? (lemmy.ca)
submitted 6 days ago by a_gee_dizzle@lemmy.ca to c/askscience@lemmy.world
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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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[-] frongt@lemmy.zip 7 points 6 days ago

An infinite, frictionless vacuum?

[-] Ludicrous0251@piefed.zip 4 points 5 days ago

Is there any other kind for spherical cows to populate?

[-] frongt@lemmy.zip 0 points 5 days ago

Now I'm trying to image how spherical cows, or really anyone, can reproduce in a frictionless vacuum.

this post was submitted on 27 Apr 2026
51 points (96.4% liked)

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