Theoretically to me, It seems like there is possibly an unseen side to the cosmos If the universe we see has a vacuum of space. Or Gravity as we understand it, It seems there may be another side possibly polarized where gravity works opposed to the way we understand it here.
thinking of the cosmos as a large empty space with the only force being gravity. I can imagine those fields where there are black holes, At those points, Our reality touches another unseen side to this reality. A side where entropy flows contrary to what we understand here. Having these two layers to reality only interact via these incredible gravitational points.
Sure nothing living would be able to survive the trip across the gravity well. But that doesn't mean there is nothing on the other side either.
Anyway, This is just a theory. But,
If all the antimatter had to go somewhere, Why not a parallel copy of this universe, and why not separate the two with incredibly vast amounts of space-time. I mean, If Gravity effects space-time to the digress we understand that it does. Why wouldn't two charges push away from each other with great force, Just like magnets would? So, My theory is, Spacetime is being created by the interactions between this universe and another pushing at once another.
I don't know, This isn't a scientific fact at this point, It's just having fun with theories.
See, The thing is, For every positively charged particle, We know there had to be a negatively charged particle created alongside it. That's how energy conservation and thermodynamics work.
So for the longest time, The question was, Where did al the negatively charged particles go, Where did all the antimatter go.. So, I assume, A negatively charged space would have anti-gravity.. I don't know. At this point, I'm just riffing..