Physics, Space, Quantum Physics, Mathematics, Science.
The Schwarzschild, Kerr, Reissner–Nordström, and Kerr-Newmann metrics: an introduction The curvature of space-time around a black hole (Source) Strictly speaking, black holes do not exist. Actually, holes, of any kind, do not exist. You can talk about holes, of course. “There’s a hole in the wall”.