As seen on Cosmos: Venus! The forecast for Venus is cloudy, cloudy, cloudy. The dense carbon dioxide atmosphere of Venus shrouds the planet in a thick layer of clouds—and heats the surface to a scorching 460° C (860° F). Although similar to the Earth in size and mass, Venus' slightly closer orbit to the sun create for it a much thicker atmosphere and a much hotter surface. The thick atmosphere was photographed above in ultraviolet light in 1979 by the Pioneer Venus Orbiter. Venus's extremely uncomfortable climate was likely caused by a runaway greenhouse effect.
Image Credit: NASA
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