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NASA Mars Exploration Program
A little liquid water still on Mars? Curiosity finds signs of brines
A little liquid water still on Mars? Curiosity finds signs of brines

Tasting the air and testing the temperature, NASA’s Mars rover Curiosity has shown that there could potentially be salty water currently beneath the Red Planet’s surface. If the brine does exist, there’s not much, it occurs only fleetingly and, even when it does exist in liquid form, it’s far too, well, briny to be of any use to living things. But the findings, published in the journal Nature Geoscience, could offer explanations for mysterious dark streaks that appear and then vanish on many Martian slopes. The findings are also a reminder that not all water is good water when it comes to the search for life. "Perhaps the statement 'Follow the...

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