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Signs of recent water on Mars

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6:09pm, December 18, 2006

Pictures showing fresh deposits of bright material on two Martian gullies provide the most compelling evidence yet that water flowed on parts of the Red Planet during the past few years, researchers say. If further evidence links bright deposits with water, the findings would indicate new places to look for signs of past or present life on Mars.

The gully images, taken in 2004 and 2005 by the recently deceased Mars Global Surveyor spacecraft (SN: 12/9/06, p. 382: Available to subscribers at So long, Surveyor), show bright streaks that weren't there in 1999. A team led by Mike Malin, who built Surveyor's camera, argues in the Dec. 8 Science that the deposits probably fo

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