For the first time, NASA has confirmed the existence of liquid water on the surface of Mars, according to new research announced Monday. The finding stems from data and analysis by NASA’s Mars Reconnaissance Orbiter.
The Mars Reconnaissance Orbiter (MRO) has verified that the dark, seasonal streaks that have appeared on Mars’ surface come from briny water flows.
MRO found evidence of narrow channels containing water cut into cliff walls through Mars’ equatorial band, though the source and chemistry of the water is yet unknown. The streaks, or recurring slope lineae, appear during the warmer summer months on the Red Planet. They disappear when the temperature drops.
The findings advance the potentiality for life on Mars, researchers said. While it is likely that life exists in the crust of Mars, the new findings further the possibility of life closer to the surface of the planet, Alfred McEwen, a planetary scientist with Arizona State University, said during a NASA press conference.
Scientists had previously run into difficulties analyzing the streaks, which measure less than 16 feet, or 5 meters, wide. The MRO’s instruments were able to process trace measurements, and scientists successfully observed the findings thanks to a computer program that can focus in on individual pixels. MRO’s data was then compared with high-resolution images of the slopes. Scientists found a match between their locations and the presence of hydrated salts.
“We’re not claiming that we found … evidence of liquid water. We found hydrated salts,” said Lujendra Ojha, a graduate student at Georgia Institute of Technology and lead author of the report, published in the journal Nature Geosciences.
While NASA has rushed to announce the findings, Ojha expressed reserve.
“It’s a little bit over-the-top announcement by NASA,” Ojha said. “There’s so many mysteries to be solved about RSL (recurring slope line).”
The presence of water on Mars in the form of ice caps has been known for years. However, proof of liquid water on the Red Planet will have major ramifications for the study of Mars. It may mean that microbial life may still survive under the Martian surface, if there ever was any in the first place.
NASA’s announcement confirming that it found evidence of water flowing on the surface Mars was welcomed mostly by publicists at 20th Century Fox looking to promote “The Martian,” the upcoming Ridley Scott film starring Matt Damon.