einstein had an idea of a theoretical object in space similar to a black hole called a white hole.
the difference between them is that instead of sucking matter in, white hole's project matter into the universe.
today's physists like to think that white hole's have the potential to create universes and that its possible that our universe was started by one, but at this point, white holes have not been seen yet. they are still only theoretical.
my idea is that the reason we haven't seen any white holes is that they are on the other side of black holes.
that black holes suck matter from out universe and use it to create new universes, appearing to be a white hole on the other side.