News tagged with white dwarf star

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The remarkable remains of a recent supernova

( —Astronomers estimate that a star explodes as a supernova in our Galaxy, on average, about twice per century. In 2008, a team of scientists announced they discovered the remains of a supernova that is the most ...

dateJun 26, 2013 in Astronomy
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Massive Black Hole Implicated in Stellar Destruction

( -- New results from NASA's Chandra X-ray Observatory and the Magellan telescopes suggest that a dense stellar remnant has been ripped apart by a black hole a thousand times as massive as the Sun. If confirmed, ...

dateJan 04, 2010 in Astronomy
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Pan-STARRS discovers two super supernovae

Supernovae are the brightest phenomenon in the current universe. As massive stars die as supernovae, they briefly outshine the rest of the stars in their galaxy and are visible, at least once the light gets there, from across ...

dateJul 22, 2011 in Astronomy
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Supernova progenitor found?

( -- Type Ia supernovae are violent stellar explosions. Observations of their brightness are used to determine distances in the universe and have shown scientists that the universe is expanding at an accelerating ...

dateAug 03, 2012 in Astronomy
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One supernova type, two different sources

The exploding stars known as Type Ia supernovae serve an important role in measuring the universe, and were used to discover the existence of dark energy. They're bright enough to see across large distances, and similar enough ...

dateMay 07, 2012 in Astronomy
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