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“Super puff” exoplanet is as big as Jupiter but 10 times lighter, confusing astronomers – CBS News

The “cotton candy” planet is challenging everything astronomers thought about the formation of gas giants.

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About 212 light years from Earth, a gas giant light enough to be nicknamed a “super-puff” or “cotton candy” planet is circling extremely close to its host star. The exoplanet is so light, it’s left astronomers questioning everything we previously knew about how gas giants form. 
This super-puff exoplanet, known as WASP-107b, is about the same size as Jupiter, but only about one-tenth the mass — or about 30 times more massive than Earth. According to a new study published Monday in The Astronomical…

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