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Jupiter is the largest planet in the Solar System, a gas giant, mostly composed of molecular hydrogen and helium gas. Its atmosphere is very dynamic. The Little Red Spot is the second largest storm on Jupiter, and is roughly 2/3 the size of the Earth. The clouds here rotate counterclockwise (anticyclonic), as it is a high-pressure region. In that sense, the Little Red Spot is the opposite of a hurricane on Earth, which is a low-pressure region.

CREDIT: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.