* Astronomy

Martian Crater May Once Have Held Groundwater-Fed Lake

A NASA spacecraft is providing new evidence of a wet underground environment on Mars that adds to an increasingly complex picture of the Red Planet's early evolution.
The new information comes from researchers analysing spectrometer data from NASA's Mars Reconnaissance Orbiter, which looked down on the floor of McLaughlin Crater. The Martian crater is 92 kilometres in diameter and 2.2 kilometres deep. McLaughlin's depth apparently once allowed underground water, which otherwise would have stayed hidden, to flow into the crater's interior.
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