Hold on, the big bang theory is that the universe started as a singularity ( point) and some event triggered a rapid expansion of all the particle inside that point. (
Big Bang )
Im not understanding this "Black Hole Theory" so everything in the known universe all came from a black hole. So whats on the other side of that black hole, another universe. Im confident that blacks holes do have two sides. Please explain more, is there a website on this?