![]() ![]() The researchers believe that Gale Crater was a large lake between 3.5 and 2.7 billion years ago. Measurements he and his colleagues made from Curiosity’s weather monitoring station have indicated that these ‘right conditions’ just happen to occur at night and right after sunrise during winter on Mars. Morten Bo Madsen, associate professor and head of the Mars Group at the Niels Bohr Institute, said that under the right conditions the calcium perchlorate can absorb water vapor from the atmosphere. Salt can lower the freezing point of water so it doesn’t freeze into ice so easily, which is why it’s often used to melt ice on sidewalks and roadways. Writing in the journal Nature, the researchers said they found the presence of the salt calcium perchlorate in the Martian soil. In a recent analysis of data produced by NASA’s Mars Rover Curiosity, researchers at the University of Copenhagen’s Niels Bohr Institute found evidence that there may be salty but liquid water closer to the surface of Mars than previously thought. But scientists now believe that most of the Planet’s current water supply exists solely in ice or vapor form. Some even suggested that at one time, Mars held great quantities of H2O. Previous studies have indicated that liquid water once flowed on the Red Planet. An artist’s impression shows how Mars may have looked about four billion years ago. ![]()
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