A planet called WASP-193b has the same density as cotton candy. Despite being 50% larger than Jupiter, it's so fluffy that scientists can't figure out how it even exists.
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"A real anomaly": Astronomers spot planet with the density of cotton candy
WASP-193b, a giant planet with a density similar to that of cotton candy
Scientists Discover Massive Planet as Light And Fluffy as Cotton Candy
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