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B4SSF4C3 t1_je74lnf wrote

Right, size has no meaning we can relate to. Space time collapsed to a singularity. They very much mean mass.

Although now that I think about it, not sure if mass has meaning either at that point? Is it “mass equivalent” effect on surrounding space time?


FrickinLazerBeams t1_je7epth wrote

No. Black holes have a size. A black hole with 30 billion solar masses has a radius of a little less than 600 AU (Astronomical Units, the average distance from the earth to the sun).