I just like thinking about things out of my depth, so take my non-expert rantings with a grain of salt: I actually have a personal theory similar to this, but

I just like thinking about things out of my depth, so take my non-expert rantings with a grain of salt: I actually have a personal theory similar to this, but instead of multiple parallel universes, just one other universe. Dual Universes. I came up with this idea when thinking about dark matter and antimatter. I seem to understand that dark matter is more plentiful away from planetary bodies. When thinking about the big bang, the mathematics/physics that governed the forming of galaxies, stars, planets, black holes, etc, seem to indicate a desire of a certain "order". What if another universe somehow broke into this one, and all the matter in it spewed forth as a different type of matter into ours? Perhaps that matter seeks to find it's original origin, perhaps in the form of a black hole back into that other universe. (discounting the blackhole/whitehole theory), but since black holes are fairly rare, in the mean-time, that matter seeks to gather until it can pass that point of no return to become a black hole. In essence my idea is that gravity is a byproduct of matter seeking to return to it's antimatter state in another universe. Lots of unfounded hypothesis there, so forgive me if I've gone off the deep end with that one. I'm just a curious george.