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This sequence illustrates the KELT-9 b system. The planet orbits close to its star on a 36-hour orbit, which makes its dayside temperatures as hot as some stars. The planet’s atmosphere is streaming away into space. Its host star has a distorted shape caused by its rapid spin, which also produces a surface with multiple temperatures. The star's polar regions are both brighter and hotter than its midsection.

Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)

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