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Neutron Star

When a star between about 1½ and 3 times more massive than the Sun erupts into a supernova, it leaves behind a superdense remnant just a few kilometres in diameter. This is a neutron star, so named because it consists almost entirely of neutrons. Rapidly rotating neutron stars can sometimes be detected as a pulsars, as for example at the heart of the Crab Nebula.


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