NASA scientists say they believe they have confirmed that water intermittently flows on the surface of Mars, a discovery that may have ramifications in the search for past or present life on the planet.
Researchers have known for many years that Mars has water frozen at its poles, in its thin atmosphere, and, most recently, in tiny puddles that appear to form at night on the surface. But flowing water is a big development, NASA said.
"This is a significant development, as it appears to confirm that water -- albeit briny -- is flowing today on the surface of Mars," said John Grunsfeld, astronaut and associate administrator of NASA's Science Mission Directorate in Washington.
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