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Black holes by supernova Firstly a black hole isnt really a hole at all but thats the easiest way to think of its effects on the rest of the universe Take a star thats at least thirty times larger than our sun and make it explode called a supernova Stars do that at the end of their lifetime sometimes leaving a remnant of the violent explosion The nature of the remnant depends on its mass If the remnant is less than 14 solar masses it will become a white dwarf a kind of hot dead star that isnt bright enough to visibly shine If the remnant is roughly 14 solar masses it will collapse The protons and electrons will be squished together and their elementary quarky particles will recombine to form neutrons What you would get is small by stellar terms sphere of neutrons with perhaps a thin film of electrons and other stuff at its surface Thats why its called a neutron star See the neutrons dont mind hanging around near each other but if you get them close enough to each other they get anxious and resist being pushed any closer Yes Im attributing emotions to sub-atomic particles The neutrons of a neutron star are indeed pressed quite close to one another and exert a certain pressure on each other This pressure prevents the further collapse of the neutrons star If the remnant is larger than 3 solar masses it becomes a black hole well 2 or 3 depending on whos giving you the number I think that calculates out to a star roughly 30 solar masses before supernova httpopositestsciedupubinfopr9623html htmlFor example lets pick Eta Carin a superstar that is hundreds of times larger than the sun also 8000 ly away and happened to have exploded around 1850ad2 That and I have a nice current picture of it Very well Eta Carin goes supernova In a supernova the atmosphere of a
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