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Iceball Mars Proving a Tough Place to Find Liquid Water

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Science  26 Feb 2010:
Vol. 327, Issue 5969, pp. 1075
DOI: 10.1126/science.327.5969.1075

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Water has been turning up far and wide on Mars, but all of it is quite solidly frozen. This frozen (or sometimes vaporous) water is looking increasingly dynamic, dancing across the planet between recurring ice ages. But radar's deep probing is pushing the search for liquid water—and possible oases of life—deeper and deeper into the planet. Planetary scientists reported the latest water-ice findings at December's American Geophysical Union meeting in San Francisco, California.