What has been determined is at the center of a celestial body such as a "black Hole"?

Question

According to astrophysicist Professor Stephen Hawking an the University of Cambridge's staff of researchers; What has been determined is at the center of a celestial body such as a "black Hole"?

Answer 1

Unknown. Without an adequate theory of quantum gravity, this object that GR predicts would be a singularity cannot be described. At quantum mechanical scales, pure General Relativity is not a realistic depcition of space-time.

Answer 2

Think a little a black hole has an infinity mass ,that should produce gravity that is from 5 to 100 light years across. If it were thought to be there everything around it would be sucked in very quickly. The only place i see the results of such a huge gravity well is in the middle of a galaxy.

Answer 3

A singularity, or "a point of zero volume and infinite density".

This is what Einstein's theory of relativity predicted, and Einstein himself rejected it because it seems like a paradox.