Stellar mass black holes may actually be a type of extremely compact star known as a gravastar, which can mimic a black hole. Theoretical physicists have found a solution to Einstein’s Theory of General Relativity that does not necessarily lead to a black hole when a star collapses at the end of its life.

Stellar mass black holes may not be black holes at all. Instead, they could be a type of extremely compact star called a gravastar, which mimics a black hole. This is according to theoretical phsyicists who have discovered a solution to Einstein’s Theory of General Relativity that doesn’t automatically result in a black hole when a star collapses at the end of its life.
