I still can’t get my head around this one. Can anyone help? I know they’re hard even for famous physicists but if anyone can simplify this concept for me I’d so appreciate it! Thank you!
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Rule 1: there’s no stopping gravity.
Only the biggest stars form black holes, since they are the only ones with enough gravity.
While the star is “alive”, there’s a continuous fusion bomb at the centre, blasting material outwards. When the fuel stops balancing gravity, what does gravity do?
a) For the smallest stars, the red dwarves, gravity isn’t expected to do anything exciting, and the ash just floats away
b) Our sun will end up as a big block of carbon, but the heat and gravity will convert it into a diamond
c) Bigger stars will crush the atoms together. The electrons, normally in a cloud around the nucleus, get pulled in and you end up with a neutron star
d) The biggest stars have so much gravity that the neutrons themselves get crushed into … well, if you know, apply for a Nobel prize. It’s assumed to be a singularity, of infinite mass in zero size. Kinda like the Big Bang, really
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