supernovas

n. (Astronomy) extremely bright star that has exploded due to gravitational collapse of the star's core (characterized by brightness that is up to 100 million times that of the Sun)

The term Super Nova has a variety of uses. It may refer to:ScientificA Supernova may refer to several types of stellar explosions that produce extremely bright objects made of plasma that decline to invisibility over weeks or months.Earth may have been formed by explosion of one of the supernovas some 5 billion years ago.
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A supernova (plural: supernovae or supernovas) is a stellar explosion that creates an extremely luminous object. A supernova causes a burst of radiation that may briefly outshine its entire host galaxy before fading from view over several weeks or months. During this short interval, a supernova can radiate as much energy as the Sun would emit over 10 billion years. The explosion expels much or all of a star's material at a velocity of up to a tenth the speed of light, driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant.
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Noun
1. a star that explodes and becomes extremely luminous in the process
(hypernym) star
(hyponym) Crab Nebula

n. supernova, (Astronomy) extremely bright star that has exploded due to gravitational collapse of the star's core (characterized by brightness that is up to 100 million times that of the Sun)

SUPERNOVE