Black holes probably don’t have a singularity

Albert Einstein denied many times through his life that black holes were possible. He even tried to disprove them in a paper published in 1939, but his argument was wrong. They are real, and we have now detected several.

A black hole forms when a star collapses on itself. Its mass is so large that the gravitational pull squeezes it down to a size where even light cannot escape. The point of no return is called the event horizon and it cloaks the interior of the black hole with complete secrecy. If you fall into a black hole, you will never return to…