NASA rover discovers liquid water 'ripples'

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https://www.livescience.com/space/mars/nasa-rover-discovers-liquid-water-ripples-carved-into-mars-rock-and-it-could-rewrite-the-red-planets-history?utm_medium=referral&utm_source=pushly&utm_campaign=Space%20Audience

Published 19 hours ago on February 17, 2025

NASA's Curiosity rover photographed remnants of rippling waves in an ancient Martian lakebed, proving that the Red Planet had open water for longer in its history than previously thought.

Scientists have discovered evidence that liquid water was once exposed to the air in ancient, shallow lakes on Mars. The finding is evidence that not all water on the Red Planet was covered in ice, as some Martian climate models suggest.

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NASA’s Mars Curiosity rover discovered symmetric ripple marks at two separate spots within the Red Planet’s Gale Crater — offering strong evidence that Mars was flowed with open, liquid water. (Image credit: NASA/JPL-Caltech/MSSS)