View Full Version : New Analysis of Clay Deposits in Ancient Martian Lakes

2012-Mar-15, 05:10 PM
Mars was once a much wetter world than it is now, with hot springs, rivers, lakes and perhaps even oceans. Just how wet exactly, and for how long, is still a subject of considerable debate. One vital clue comes from clay mineral deposits and sediments left over after the water disappeared, but still visible now. [...]

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