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#neutron star #density #degenerate matter #compact star #stellar remnant #small star

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#white dwarf #stellar evolution #low mass star #sun death #fading star #degenerate matter #planetary nebula progenitor

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#neutron star #dense star #collapsed core #stellar remnant #degenerate matter #stellar compression

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#fermi sea #fermi energy #electron gas #degenerate matter #zero temperature limit