What is the fate of the core of a massive star that undergoes core-collapse supernova, provided it is not massive enough to form a black hole?
Answer
It compresses into a neutron star, packing immense mass into a small volume.
When a massive star's core collapses but the progenitor mass is insufficient to overcome neutron degeneracy pressure, the core compresses into an extremely dense object composed almost entirely of neutrons, known as a neutron star.
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