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NASA Confirms liquid water on Mars

or 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 dark, seasonal streaks that have appeared on Mars' surface come from briny water flows.
© NASA / Greg Shirah / Handout
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 warmer, summer months on the Red Planet. They disappear when the temperature drops.
Scientists had previously run into difficulties analyzing the streaks, which measure less than 16 feet, or 5 meters, wide. The orbiting 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.
The discovery "confirms that water is playing a role in these features," according to Alfred McEwen, a planetary scientist with Arizona State University. "We don't know that it's coming from the subsurface. It could come from the atmosphere.'
NASA's Mars rover Curiosity previously found evidence that Mars had suitable conditions for microbial life to exist at some point in the past.

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