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Posted May 24th, 2007 by adminNASA Tech Briefs INSIDER 05/24/2007
Mars Discovery Provides Evidence of the Planet’s Wet Past
The alpha particle X-ray spectrometer, a chemical analyzer at the end of Spirit’s arm, had measured a composition of about 90% pure silica for this soil. The team has laid out plans for further study of the soil patch and surrounding deposits.
Exploring a low range of hills inside a Connecticut-sized basin named Gusev Crater, Spirit had previously found other indicators of long-ago water at the site, such as patches of water-bearing, sulfur-rich soil; alteration of minerals; and evidence of explosive volcanism.
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