What remnant is formed from a star generally exceeding eight to ten solar masses after a supernova?
Answer
A neutron star or a black hole
When stars massive enough, typically defined as those exceeding approximately eight to ten times the mass of the Sun, exhaust their core fuel, their gravitational collapse is so complete that electron degeneracy pressure is insufficient to halt the inward crush. This results in a core collapse that triggers a violent supernova explosion. The remnant left behind is extremely dense; depending on the exact initial mass, it will either stabilize as a neutron star—an object so compact that protons and electrons merge—or, for the most massive progenitors, collapse completely past the point of neutron degeneracy support, forming a black hole.
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