Tue, 02/20/2024 - 16:05 Gizmodo If you asked an astrophysicist what is yet to be discovered in the universe, there’s a good chance they’d paraphrase Donald Rumsfeld: It’s full of known unknowns. Read more... Tags general relativity, dark energy, gravity, Black hole, karl schwarzschild, outline of black holes, donald rumsfeld, hypothetical stars, Black Holes, Albert Einstein, daniel jampolski, einstein, theory of relativity, quantum gravity, gravastar, luciano rezzolla Source Nesting Doll Stars Proposed as Solution to General Relativity