Bizarre object 10 million times brighter than the sun defies

A bizarre 'ultraluminous X-ray source' shines millions of times brighter than the sun, breaking a physical law called the Eddington limit, a new study finds.

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Italy , Cagliari , Sardegna , Matteo Bachetti , Nuclear Spectroscopic Telescope Array Nu , , Astrophysical Journal , Spectroscopic Telescope Array , Cagliari Astronomical Observatory ,