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Although the surface of Mars is presently cold and dry, plenty of evidence suggests that the red planet was once partly covered with water. Researchers have theorized that life might have evolved on Mars when it was wet, and life could even be there now, hidden in subterranean aquifers.
New findings from NASA’s Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen on the Red Planet.
Using seismic activity to probe the interior of Mars, geophysicists have found evidence for a large underground reservoir of liquid water — enough to fill oceans on the planet’s surface.
Mars contains water, though mostly as permafrost. As top surface layer water appears readily visible at some places, such as the polar Korolev Crater. Almost all water on Mars today exists as polar permafrost ice, though it also exists in small quantities as vapor in the atmosphere. [1]
Scientists Monday announced they've found evidence of liquid water on Mars -- which they say is buried deep underground in cracks several miles under the planet's surface.
Mars once rippled with rivers and ponds billions of years ago, providing a potential habitat for microbial life. As the planet’s atmosphere thinned over time, that water evaporated, leaving the frozen desert world that NASA’s Mars Reconnaissance Orbiter (MRO) studies today.
NASA’s Curiosity rover has begun exploring a new region of Mars, one that could reveal more about when liquid water disappeared once and for all from the Red Planet’s surface. Billions of years ago, Mars was much wetter and probably warmer than it is today.
NASA's Opportunity rover has found convincing evidence that large quantities of water were once present in at least one location on Mars. "The rocks here were once soaked in liq...
Scientists have uncovered further evidence that liquid water exists beneath the ice cap at the southern pole of Mars and it may mean that the planet is geothermally active.
In what could turn out to be a landmark discovery in the history of Mars exploration, imaging scientists using data from NASA's Mars Global Surveyor spacecraft have recently observed features that suggest there may be current sources of liquid water at or near the surface of the red planet.