I'm fairly new to physics and currently reading A Brief History of Time by Stephen Hawking. Hawking is talking about black holes being the size of a few miles containing the mass of multiple times the sun's mass. How can matter be squeezed that dense? Isn't there a final point of matter being squeezed?
Maybe a silly example, but if a black hole can be multiple miles in diameter, why can't I compress my daily garbage to the size of a cubic centimeter sized cube with a giant hydraulic press? Or change the density of a steel block with a gigantic press?
So basically, how can an atom be squeezed denser than it already is? I guess that's what happens in black holes at least! I couldn't find a non-physicist easy explained answer, an answer like how Hawking explains things by examples in his books. Thanks!