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NASA Discovers Evidence for Liquid Water on Mars


Stashed in: NASA, NASA to Me, Mars

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We’re not talking gushing rivers or oceans here:

These scientists have been investigating “recurring slope lineae,” patches of precipitated salt that appear to dribble down Mars’ steep slopes like tears rolling gently down a cheek. Planetary scientists hypothesized that the streaky formations were products of the flow of water, but they didn’t have concrete, mineralogical evidence for that idea until now, says Lujendra Ojha, a scientist at Georgia Tech who first spotted the lineae back in 2010. In a new Nature Geoscience paper, published online today, Ojha and his colleagues present “smoking gun validation” that it was liquid water flowing on Mars’ surface that formed these tear stains.

Still, NASA scientists have found compelling evidence that liquid water—life-giving, gloriously wet H 20—exists on Mars.

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