Word: giantstar
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According to theory, a supernova occurs after a giantstar- substantially more massive than the sun-has exhausted its thermonuclear fuel. The star's distended gases begin to collapse toward its center of gravity, crush together and reheat to incredible temperatures of 100 billion degrees, and then explode in a fiery outburst as bright as a billion suns. Left at the center of the supernova is a tiny (about ten miles across) star consisting of tightly packed neutrons, or a smaller "black hole"-a star so dense that its tremendous gravity prevents even light from escaping. The 1967 discovery...
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