One theory is that one universe comes out of another. Stephen Hawking has even suggested that blacks holes cause a new universe to form. Once matter is crushed into non existence by a black hole, it more or less becomes matter in another universe. So would there be infinitely many universes, each inside another one, with no real first universe? Or are there a finite number of universes? That’s what’s not clear to me about this theory.
Duplicate closed.