I don’t really get how somthing that’s small makes it a black hole.
In: Physics
For very big stars, it is more that they become so dense and heavy they can’t stop from becoming tiny. The atoms can only push against each other so hard before they are pushed together, and as a star makes hydrogen into denser and denser elements the pressure passes that point and the atoms are mashed together. There are a few more points where an even smaller thing’s resistance to pushing stops it (like neutron stars, but that’s another story) but if you get past those eventually something happens that we don’t really understand yet and they condense to an infinitely small point along with a very very big explosion.
For things that aren’t stars, you could also crush them so hard that their particles can’t resist the pushing, but very big stars collapsing are the only natural phenomena we know where the pushing gets that intense.
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