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I always hear people talking about object falling into the black hole, possibly going through a wormhole and exiting in another universe etc.But isn't this fundamentally impossible? Black holes are completely solid, comprised of matter. Falling ''into'' a black hole is worse than saying falling into the earth from an airplane because the black hole is considerably more dense.(And this is another thing. I'm supposed to say the black hole is infinitely more dense than the earth because it has infinite density. In principle, this is very easy to understand because the space inside it is completely filled up with 0 cracks inside, therefore infinite density; But isn't this mathematically unacceptable since there should be such a thing as ''the largest possible value before infinity'' in this case if I'm not mistaken)Therefore, wouldn't something fall ONTO a black hole? I am aware that it would get shredded to bits before it could even reach it, but we're speaking hypothetically, of course. This is why wormholes never made sense to me. It would be pretty funny if in xxxx years we could come up with such an advanced technology, that we would be able to send a spacecraft which resists all of the black hole's forces to try to enter it, and the spacecraft just slammed into the black hole, killing everyone inside.I would be grateful if someone more knowledgeable corrected me

I'm supposed to say the black hole is infinitely more dense than the earth because it has infinite density.

(anything) would get shredded to bits before it could even reach (a black hole)

The only place "infinite density" could exist, would be at the singularity, which, for a non-rotating black hole is a mathematical point at its center.

in the meantime I found out that atoms are in fact compressible and do not have a ''volume'' as I thought they did. Is this true?

With a sufficiently large star undergoing a supernova, the gravity is so great that it will collapse past the neutron star stage into a black hole.