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Supernova may be in a new class

Oddball stellar explosion doesn’t match known outbursts

4:52pm, June 17, 2009

Just in time for July 4, astronomers say they have found a new type of stellar firecracker.

Stars that die an explosive death generally fall into two categories: young, massive stars that collapse under their own weight and hurl their outer layers into space, and older, sunlike stars that undergo a thermonuclear explosion. But the stellar explosion recorded in January 2005 and known as SN 2005E doesn’t fit either class, according to a new analysis reported online June 11 at

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