amorteamo1516 amorteamo1516 15-12-2021 Physics contestada Neutron stars are: Low density star remnants with a mass less than the mass of the Sun. Incredibly small remnants of supermassive stars where the gravitational collapse is halted by neutron degeneracy. Incredibly big and massive star remnants that expel all neutrons in a supernova explosion.Neutron stars are: