There is actually a theory that every black hole is the birth of a new universe and that this is how a universe produces offspring and so on.
I'm sceptical though because what happens to all the matter? Does the new universe only contain the matter/energy that fell into the black hole or is there also magic involved? And if matter falling into a black hole/universe makes it expand and increases its energy, why does our universe expand without gaining more energy? What if two black holes collide?
http://www.space.com/33176-gravitati...collision.html
http://www.nature.com/news/the-black...hysics-1.19612
Does this mean that two entire universes were torn apart or collided into one another? What would it look like if another universe violently collided with ours? If our universe expands and mostly contains nothing, what does it expand into anyway?
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