A weird long cloud on Mars has returned. It's right on schedule, scientists say.

Jan 9, 2020
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No attempt to explain it in the article? Since upper air winds go west-to-east, maybe it's an orographic cloud produced by a N-S ridge? It seems like speculation must be happening, since local winds are happening. What that speculation is did not get mentioned in the article.
 
Dec 11, 2019
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No attempt to explain it in the article? Since upper air winds go west-to-east, maybe it's an orographic cloud produced by a N-S ridge? It seems like speculation must be happening, since local winds are happening. What that speculation is did not get mentioned in the article.
It is not bad if you consider that not long ago mankind believed that Mars was a dried and geologically dead planet... now we are studying active phenomena based on water... quite fantastic!
 
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