Supernova

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)

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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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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The Supernova/Acceleration Probe (SNAP) Mission is expected to provide an understanding of the mechanism driving the acceleration of the universe. The satellite observatory would be capable of measuring up to 2,000 distant supernovae each year of its three-year mission lifetime. The SNAP is still in the proposal stages, and has yet to receive final approval. Should it be approved, the hoped for launch date is 2013.
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Noun
1. a star that explodes and becomes extremely luminous in the process
(hypernym) star
(hyponym) Crab Nebula

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

n. supernova, (Astronomy) extremely bright star that has exploded due to gravitational collapse of the star's core