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Mars: damp
Two areas of Mars in the "Rocknest" location that were scooped out by the Curiosity rover last year. Researchers took samples of the areas to determine whether they were wetter underneath or whether they dried out after scooping. They found that soil moisture was consistent at the surface and underneath. Nevertheless, there is a small amount of water in the soil that astronauts might be able to use to sustain themselves. These findings and others are outlined in a series of papers just published in the journal Science. Credit: NASA.
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