Lichens, cyanobacteria and molds growing in humidity of simulated Martian atmosphere: Difference between revisions

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The Viking 2 observed frosts for 250 sols of the year (frost usually suggests a high relative humidity close to 100%).
 
Viking 1 and Curiosity didn't observe them directly. But there is indirect evidence that frosts may form at times at lower latitudes, including imaging of mists in the Valles Marineres, and possible observation of frost on the deck and calibration target of Opportunity.
 
==References==