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The Chandra X-Ray Observatory Unmasks a Supernova Impostor
Some stars, called Luminous Blue Variables, can be confused with supernovae explosions. They exhibit similar outbursts, but unlike supernovae, which explode once and then are gone forever, these stars have periodic outbursts. New research found that one of these 'supernova impostors' is in a binary relationship with a black hole or a neutron star, and that explains its periodic outbursts.
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