NASA: Flowing Streams Of Water Spotted On Mars

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CAPE CANAVERAL (CBSMiami/AP) — What appears to be flowing streams of salt water have been spotted on Mars during its 'summer' months.

In 2008, scientists confirmed the existence of frozen water on Mars. But the latest observations from an instrument aboard NASA's Mars Reconnaissance Orbiter strongly support the longtime theory that salt water in liquid form flows down certain Martian slopes, according to the researchers.

"Mars just got more interesting," NASA said via Twitter before holding a news conference at its Washington headquarters. The space agency called the results "a major science finding."

Because liquid water is essential to life, the findings could boost the notion of living organisms on Mars. The researchers said in the journal Nature Geoscience that further exploration is warranted to determine whether microscopic life exists on the planet.

The evidence of flowing streams consists of dark, narrow streaks on the surface that tend to appear and grow during the warmest Martian months and fade the rest of the year.

Mars is extremely cold even in summer, and the streaks are in places where the temperature has climbed above minus-10 degrees Fahrenheit. But salt can lower the freezing point of water and melt ice.

The source of the water is still a mystery. Scientists noted it could be melting ice, an underground aquifer, water vapor from the thin Martian atmosphere, or some combination.

The Mars Reconnaissance Orbiter has been circling the planet since 2006.

(TM and © Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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