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September 28, 2012 12:45 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/8ooTtx1Bcbs/curiosity-adds-to-evidence-tha.html
Curiosity adds to evidence that water once flowed on Mars
When a narrow stream, flowing downhill, meets a wide, significantly-flatter valley, you get an alluvial fan — a place where the flow of water spreads out, slows down, and leaves behind all the rocks and sediment it's no longer moving fast enough to carry. At least, that's how it works on Earth. Once upon a [...]Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/8ooTtx1Bcbs/curiosity-adds-to-evidence-tha.html
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