Strong evidence Mars has streams of salt water in summertime

CAPE CANAVERAL, Fla. (AP) — Mars appears to have flowing streams of salty water, at least in the summer, scientists reported Monday in a finding that could have major implications for the possibility of life on the red planet.

Scientists in 2008 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 each summer, 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.

The lead author of the research paper, Lujendra Ojha, is from Georgia Institute of Technology.

CAPE CANAVERAL, Fla. (AP) — Scientists are reporting that Mars appears to have not only frozen water but flowing streams of salty water, at least in the summertime.

They say their latest observations “strongly support” the longtime theory that salt water flows down certain Martian slopes each summer.

These dark, narrow streaks tend to appear and grow during the warmest Martian months, and fade the rest of the year. Salt lowers the freezing point of water, and scientists say that would explain these seasonal briny flows.

Because water is essential to life, Monday’s findings could have major implications.

The researchers say further exploration is warranted to determine whether any microscopic life might exist at modern-day Mars. They based their findings on data from NASA’s Mars Reconnaissance Orbiter, which has been circling Mars since 2006.