Crab nebula outbursts shock astronomers | Science News

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Crab nebula outbursts shock astronomers

Spacecraft detect powerful gamma-ray flares from a supernova remnant known for its steady glow

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3:32pm, December 7, 2010

HEIDELBERG, Germany — Astronomers consider the Crab nebula one of the steadiest sources of high-energy radiation in the universe. Radiation from the supernova remnant is believed to be so constant that astronomers use it as a standard candle with which to measure the energetic radiation of other astronomical sources.

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