NASA's Cassini mission was able to capture images of the north pole of Saturn. What can be seen is an incredible six-sided feature surrounding the entire pole. The hexagon is nearly 25,000 kilometers in diameter.
Thermal-infrared light images indicate the hexagon extends approximately 100 kilometers below the cloud tops, which is significantly deeper than previously thought (first seen by Voyager over 25 years ago). A cloud system within the hexagon spins around the inside "like cars on a racetrack".
Take a look at this short clip of the clouds in motion.
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