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Study Describes Ancient Deltas, Lakes on Mars

Recent studies of the history of water on Mars indicate that the planet has a much wetter past than previously thought. The latest study, reported October 8 in the journal Science, describes a system of deltas and lakes that dominated the Martian landscape more than 3 billion years ago. This builds on news NASA released a week earlier that water flows on the red planet today. John Grotzinger, professor of geology at the California Institute of Technology, is the lead author of the...

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