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High-Silica “Halos” Indicate Mars Was Quite Wet in the Past

NASA JPL May 30, 2017 Pale “halos” around fractures in bedrock analyzed by NASA’s Curiosity Mars rover contain copious silica, indicating that ancient Mars had liquid water for a long time. “The concentration of silica is very high at the centerlines of these halos,” said Jens Frydenvang, a rover-team scientist at Los Alamos National Laboratory in New Mexico, and the ... Read More »

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