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Friday, August 8, 2008

Clay deposits on Mars signature of water, life?

People's Daily Online: "A new study took a closer look at the clays in the Mawrth Vallis region of Mars and found the clays lie in a uniform sequence of layers, according to the journal Science Friday.

The study indicates the chemistry of water on Mars changed over time and sheds light on the planet's history of water and life."

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