Liquid water flowed on Mars during intervals of warmth

November 18, 2014 2:27 AM

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Liquid water flowed on Mars during intervals of warmth

Greenhouse effects caused by volcanic gases could have warmed parts of Mars enough for liquid water to flow.

Evidence gathered in recent years, such as the discovery of a primeval lakebed by NASA’s Curiosity rover, points to an ancient Mars that saw liquid water flowing on its surface. However, climate models of Mars billions of years ago suggest that the planet’s atmosphere was too thin to capture suffici...

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