'Unambiguous Evidence' For Ancient Lake On Mars 3.4 Billion Years Ago

A University of Colorado at Boulder research team say their discovery of shorelines on Mars is an indication of a deep, ancient lake there and a finding with implications for the discovery of past life on the Red Planet. Estimated to be more than 3 billion years old, the lake appears to have covered as much as 80 square miles and was up to 1,500 feet deep, roughly the equivalent of Lake Champlain bordering the United States and Canada, said CU-Boulder Research Associate Gaetano Di Achille, who led the study. The shoreline evidence, found along a broad delta, included a series of alternating ridges and troughs thought to be surviving remnants of beach deposits. read more

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