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Eerie glowing clouds light up the Martian twilight

21 May 2019, 13:00 UTC
Eerie glowing clouds light up the Martian twilight NASA/JPL-Caltech/Justin Cowart

Mars has fascinated humans for, well, forever. A bloodshot, baleful eye in the heavens… telescopic observations furthered its allure, with straight lines across the surface that looked like canals, and barely glimpsed features that changed with season, hinting at perhaps Earth-like conditions.

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