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Featured Thread: Black Holes in Curved Spacetime
Do Black Holes form in Curved Spacetime? What is and is not known about this?
We've been talking in another thread about supermassive black holes. That has me thinking about really, really big BH's - so large that the spacetime curvature and evolution of the universe matters. Let's start by defining the density of a black hole as its mass divided by the volume enclosed by its event horizon...

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