/sci/ - Science & Math

Ok so, I have questions.

Why does density play a part in the gravitational pull of something?
Density is just how close atoms are to each other right?
So in a black hole all the atoms must be getting crushed against each other, like if you crushed a bunch of marbles until you got marble powder, all the particles that compose the atoms should break lose and form one huge nucleus that is the black hole itself.

But why does this new state of matter have more gravitational pull when it's just taking up less space?
What happens to all the particles that are being crushed in the center of the black hole?
Do they vibrate? Do they contain energy?
If gravitons exist, wouldn't they collapse under their own effects as well?