New research indicates there is a buried reservoir of super-salty water near the south pole of Mars. Scientists say such a lake would significantly improve the likelihood that the planet might harbor microscopic life of its own.
Mars is now thought to be bone dry, but moisture in its atmosphere freezes during Martian winters as water ice above the permanent carbon dioxide ice caps at the north and south poles.
Steve Clifford of the Planetary Science Institute, a nonprofit based in Tucson, Arizona, said he agrees that an underground body of water is the most plausible explanation for the radar observations by Mars Express – but he argues it might not be as cold or as salty as the researchers suggest. A radar map of the region near the south pole of Mars where hypersaline water is thought to exist beneath the surface, shown here in shades of blue.That would mean that the underground reservoirs on Mars needn't be extremely salty to stay liquid, he said.
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