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Scientists uncover secrets of mysterious 1,100-mile-long Mars cloud – CNET
A wild, snaking cloud stretching 1,100 miles appears to emerge from the Arsia Mons volcano on Mars.

These two views from July 2020 show the elongated cloud extending from the Arsia Mons volcano on Mars.
ESA/GCP/UPV/EHU Bilbao
In 2018, some corners of the internet thought there might a massive volcanic eruption on Mars, but it was a trick of the eye. A long, thin cloud appears above the Arsia Mons volcano on Mars seasonally, and now scientists have gotten a better look at how it forms and dissipates.
A team of researchers investigated the cloud’s lifecycle using a camera nicknamed “the Mars Webcam”…
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