I was wondering which has more mass The Milky Way or the supermassive blackhole at the center. And I was wondering if our sun was sucked in and suppose you could measure the size it would be reduced to after going in how big would it be. I guess what I really want to know is what happens to the space in between the electron and the nucleus of an atom after entering a black hole? do they touch? I'm assuming they do . what about the sub atomic particles, does the same thing happen to them? I'm not sure how the all that mass fits in a black hole and it be as small as it is. there has to be a fantastic amount of smaller particles that are yet to be discovered that are also compressed for everything to fit. Is the Hadron Collider in Swizterland going to find them .