What is your best guess today on what you think is on the other side of a black hole? It might be impossible to go through one, but still fun to ponder what is on the other side.
I was talking to some friends about it and we had some pretty weird answers, what do you guys think? Another dimension? A door to another part of the universe?
Well, it seems the math can work in several ways, but "to go through" is not in the math, afaik. That concept is about the purely theoretical wormhole.
The best explanation, I think, is there is nothing in there, at all. According Dr. Kip Thorne's work, all the matter is stripped of it's energy to maintain an ulta-dense knot of wickedly twisted space-time.
This builds on the work of Albert Einstein that showed that matter is warping or compressing space-time. Matter somehow creates a gradient in space that is "downhill" for all other matter. We call it gravity. We think this Higgs field is discovered, now, as evidenced by a new boson found by the Large Hadron Collider this year.
Dr, Thorne's work shows how space-time itself, compressed so severely, can be a gravity source without matter.
And there is further work, by physicist, Milo Wolf that seeks to describe mathematically, all matter as resonance or harmonic of space itself.
"The simplest resonance is the electron whose mathematical physical structure is exactly known. Electron waves (comprising all charged particles) extend to infinity serving as the 'communicator' of the natural laws. In contrast, the hadrons exist in a closed, high density region of high-frequency waves analogous to waves inside a drum or a hollow sphere. No one is sure. It is thought that the many modes of possible vibration in the closed space correspond to the many types of hadron particles."
And indeed, there is math to suggest that black holes are the Mothers of other universes. Physicist, Lee Smolin, has put this forward.