I don’t understand how all of the weight on the Earth doesn’t force it to collapse on itself? What is the Earth using to provide this force that is stopping us from falling through. Obviously gravity is a thing but I don’t even understand that well enough lol.
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So what is stopping matter from collapsing under its own gravity?
First layer of support is the electric repulsion between the electron clouds of atoms. Electrons are all negatively charged the closer two coulds get the stronger the repulsion. If it equals gravity its in a balance. For a while this is a stabil balance more gravity more compression stronger repulsion balance maintained.
But there is a point where the electric repulsion isn’t enough anymore. Electrons are forced into similar states but that once all possible states available are occupied there is no where to compress anymore. The Pauli exclusion principle is the result that all fermions like electrons can only pair up in antisemitic states. Or in simpler words no two electrons can occupy exactly the same state. This effect keeps an object from collapsing further and is called electron degeneracy pressure. And this effect keeps white dwarfs from collapsing further.
But gravity could be even stronger accelerating the material as it falls inwards creating energy conditions where where the protons and electrons turn into neutrons and they get compressed, neutrons are fermions two so the same thing applies and we call this neutron degeneracy pressure keeping neutron stars stabil.
But when the infilling material is accelerated so much there is too much gravity neutrons are forced to have very different momentums which allows them to bi pushed into a single point whatever that really means. Thats a singularity that we imagine as a point of infinite density. Thats a black hole.
So material structure comes from electric repulsion between the electrons. Then we got degeneracy pressure between fermions and after that we got a singularity.
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