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Corot-7b planet and star. Artwork of the star Corot-7 seen over the limb of the planet Corot-7b (lower left). This planet lies about 489 light-years from Earth, in the constellation Monoceros. It orbits only 1.6 million miles from its star and is therefore searingly hot and probably consists almost entirely of rock and metals. It has a mass five times that of Earth's. The probable temperature on its day side is above 2,000 degrees Celsius, but minus 200 degrees Celsius on its night side. Here, the surface is shown as lava (molten rock). Its sister planet, Corot-7c, is at upper right. Both were discovered in 2009.
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