Vanished star may be first known failed supernova | Science News

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Vanished star may be first known failed supernova

Despite no signs of massive explosion, black hole now marks stellar grave

By
6:00am, September 20, 2016
galaxy NGC 6946

FIZZLED SIZZLE  A star that vanished in galaxy NGC 6946 (pictured) might be the first confirmed case of a failed attempt at a supernova.

A star that mysteriously disappeared might be the first confirmed case of a failed supernova, a star that tried to explode but couldn’t finish the job. A newborn black hole appears to have been left behind to snack on the star’s remains.

In 2009, a star in the galaxy NGC 6946 flared up over several months to become over 1 million times as bright as the sun. Then, it seemed to vanish. While the star could just be hiding behind a wall of dust, new observations with the Hubble Space Telescope, reported online September 6 at arXiv.org, strongly suggest that the star did not survive. A faint trickle of infrared light, however,

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