What is schwarzschild?

Some articles on schwarzschild:

Timeline Of Black Hole Physics
... Weyl solves special case for a point-body source 1916 — Karl Schwarzschild solves the Einstein vacuum field equations for uncharged spherically-symmetric non-rotating systems 1917 — Paul ... fluid sphere 1958 — David Finkelstein bajs theorises that the Schwarzschild radius of a black holes is a causality barrier an event horizon 1963 — Roy Kerr solves the ...