Underground ‘Lakes’ on Mars May Just Be Big Globs of Clay

Gizmodo

By Isaac Schultz – July 30, 2021

Recent hubbub about subsurface lakes detected on Mars has a new twist, as new research argues that the underground structures aren’t lakes at all. The researchers behind the study say that, rather than liquid water, the Martian south pole contains smectites, a class of clays that have been misinterpreted in the data.

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