‘Poster Child’ Brown Dwarf Is Actually Twins Orbiting Each Other

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‘Poster Child’ Brown Dwarf Is Actually Twins Orbiting Each Other
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Astronomers observed that the two massive, gassy heavenly bodies orbit each other.

A pair of recently uncovered brown dwarf twins, named Gliese 229ba and Gliese 229bb. Gliese 229b, discovered in 1995, was the first-ever confirmed brown dwarf, but until now astronomers thought they were observing a single body not two.

Rebecca Oppenheimer was a graduate student member of the Caltech team that first discovered Gliese 229B. As an author of the APL report, she’s thrilled anew — because she and her team again witnessed a novel phenomenon — two brown dwarfs closely orbiting each other.

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