This colorful space wallpaper from NASA's Cassini mission is the highest-resolution view of the unique six-sided jet stream at Saturn's north pole known as "the hexagon." Image obtained on Dec. 10, 2012 and released Dec. 4, 2013. [ Bizarre Saturn Vortex Swirls in Stunning New NASA Video - Read the Full Story ]
(Image: © NASA/JPL-Caltech/SSI/Hampton)
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