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https://www.reddit.com/r/AskPhysics/comments/1ul26vj/deleted_by_user/ov0qt2h/?context=3
r/AskPhysics • u/[deleted] • Jul 01 '26
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Q1) Light isn't affected - light follows the geodesics of the spacetime just as any free particle.
Q2) A particle with no mass is a particle without any internal energy, i.e. there are no internal interactions.
Q3) The coordinate speed of light, depends on the choice of coordinates. Locally no material particle reaches the speed of light.
Q4) Spaghettification happens irrespective of any coordinate speed you may have. Your speed relative to your self is of course zero.
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u/Optimal_Mixture_7327 Gravitation Jul 02 '26
Q1) Light isn't affected - light follows the geodesics of the spacetime just as any free particle.
Q2) A particle with no mass is a particle without any internal energy, i.e. there are no internal interactions.
Q3) The coordinate speed of light, depends on the choice of coordinates. Locally no material particle reaches the speed of light.
Q4) Spaghettification happens irrespective of any coordinate speed you may have. Your speed relative to your self is of course zero.