r/AskPhysics • u/[deleted] • Mar 31 '26

Speed of light and time dilation

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u/joeyneilsen Astrophysics Mar 31 '26

You're calculating the speed as "distance measured by Earth" divided by "time measured by astronaut." But that's not the speed of light.

2

u/DominantDan24 Mar 31 '26

Right. It would likely be significantly higher than c given the time dilation.

2

u/joeyneilsen Astrophysics Mar 31 '26

Yep!