#MarsExpressHRSC image of a 1500 km cloud forming over the summit of Arsia Mons. This cloud isn't a sign of an eruption at the 20 km high volcano -- it's an orographic cloud that usually forms every morning for a few months Mars is closest to the Sun. pic.twitter.com/8nkI2bdO6k
— 👾 Justin Cowart 👾 (@jccwrt) November 11, 2019
via Twitter https://twitter.com/jccwrt
November 11, 2019 at 06:10AM
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