Quote Originally Posted by Billionfold
Here's a theory I just pulled out from under my hat...

Perhaps universes are what happen at the singularity of black holes. Let's say our Big Bang was caused by the formation of a black hole. Everything that gets sucked into it from the other universe is... exploded into what we now call our universe. What do you think?
That could be but then you have to ask yourself how the matter from that other universe got there in the first place.