Little Toe,
I believe in the "Big Bang," but scientists cannot rule out the possibility that the primordial energy from which the Bang arose was a collapsed universe. I was talking about a never-ending cycle of expansions and collapses of a universe which always existed. A universe which always existed--in one form or the other--seems no less probable than a god which has always existed and which created the universe.
Another theory I favor has our universe arise from one of the many black holes created in its parent universe, that parent having arisen in a similar fashion. Each universe spawns a number of black holes in the manner of fractals; each universe inherits the physics of its parent, with some variation; in some of these new universes, formation of matter, and therefore, life, is possible; in others, it's not.
Joseph F. Alward
"Skeptical Views of Christianity and the Bible"