The unusually light soil recently found on the Martian surface is composed of almost entirely silica. Such soil has never been seen on Mars before. Silica, on Earth, is generally created by volcanic activity or a hot spring. This suggests that Mars may have had hot water activity across its surface. Also, microbes flourish on such Earth conditions, so scientists are curious if microbes flourished on a wet Mars thousands upon thousands of years ago.
Friday, December 21, 2007
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