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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. CNN — What’s big, with a fluffy, cotton candy-like composition? It turns out to be a planet. An international coalition of astronomers recently discovered an unusual planet called WASP-193b, which is about 50% larger than … Read more

K. Ivanov An extremely low-density planet called WASP-193b is larger than Jupiter, but weighs only a fraction of its mass. Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. CNN — What’s big, with a fluffy, cotton candy-like composition? It turns out to be … Read more