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A Strange Cloud on Mars Has Puzzled Scientists for Decades—Now They May Know Why It Forms

Summary by The Debrief
A mysterious 900-mile-long cloud on Mars known as "AMEC" is challenging what scientists know about cloud formation.

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The recorded image of Mars shows a strange white cloud more than 1,500 kilometres long that forms only in spring and summer and in the morning hours.

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Scientists from France have described a type of cloud on Mars that forms without the presence of dust in the air. It is the Long Cloud of Arsia Mons, known by the acronym AMEC, a structure of water ice that reaches 1,800 kilometers in length. The responsible process is homogeneous nucleation, in which [...] The article AMEC Cloud of 1,800 km on Mars forms without dust in the atmosphere was originally published in Mix Vale.

·Brazil
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Portal Mix Vale broke the news in Brazil on Sunday, November 1, 2026.
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