 Quote by Lapidus
Is it true that massive observers travel with c when passing an event horizion?
I know that light cones get tilted at the event horizon. But every observers travels at light speed there?
thanks in advance
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No. No massive object can reach c, even at the event horizon of a BH.
The EH simply means that the escape velocity at that point is c, meaning that that
any object (such as a photon) will never achieve escape velocity. It is incidental that any
other object moving slower than c cannot escape either.