NASAのインスタグラム(nasa) - 5月26日 04時36分

Swipe to see the swirling Jovian cloudscape, courtesy of our Juno spacecraft (@nasajuno)! Captured on May 19, these images show waves of turbulent clouds that dominate Jupiter’s atmosphere. Details as small as 4 miles across can be identified here. See those small, bright, high clouds? They’re about 16 miles across and in some areas appear to form “sqall lines” – a narrow band of high winds and storms associated with a cold front. On Jupiter, clouds this high are almost certainly comprised of water and/or ammonia ice.
The small bright clouds that dot Jupiter’s entire south tropical zone (3rd image) appear tiny, but actually tower roughly 30 miles wide and 30 miles high and cast shadows on the clouds below. It’s possible that these clouds may be sources of lightning. This is the first time so many cloud towers have been visible, possibly because the late-afternoon lighting is particularly good at this geometry.
Credits: NASA/JPL-Caltech/SwRI/MSSS
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