summary - NASA's Mars Curiosity rover has found much higher concentrations of silica at some sites the rover has investigated in the past seven months than anywhere else it has visited since landing on Mars 40 months ago. Silica makes up nine-tenths of the composition of some of the rocks.
Monday, December 28, 2015
New Mars Rover Findings
Science Daily: New Mars rover findings revealed - Much higher concentrations of silica indicate 'considerable water activity'
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