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Gemstones, Lack of Limestone Hint At Dry Mars

SpaceExploration Sunday, October 26, 2003 . This is a SciScoop post by Ricky James

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If life on Mars never had oceans in which to form, perhaps it did so in the clay of caves. It may be a while before we know, since it takes a long time to prepare a space mission to Mars to check things like that out.

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