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About 3 billion years ago
- 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. It’s commonly believed that Mars’ water evaporated about 3 billion years ago.
spacenews.com/mro-finds-water-flowed-on-mars-longer-than-previously-thought/MRO Finds Water Flowed on Mars Longer Than Previously Thought
2 days ago · 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. “On Earth, water means life,” said Alberto Fairen, an astrobiologist at the Center of Astrobiology in Spain and Cornell University in Ithaca, New York.
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Jan 26, 2022 · 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.
- Jet Propulsion Laboratory
Historical background. The notion of water on Mars preceded the space age by hundreds of years. Early telescopic observers correctly assumed that the white polar caps and clouds were indications of water's presence.
Mar 16, 2021 · A new study shows that up to 99% of Mars's water did not evaporate into space. Instead, it's still there—held in rocks and soil.
Jan 10, 2020 · Sulfate salt deposits found near the upper Murray formation region have revealed a period in Mars’ history when a rapid evaporation of water occurred. All that water vapor was lost to space.
- Jennifer Leman
- 41 sec
Oct 16, 2006 · Launched on 2 June 2003, Mars Express has changed the way we think of Mars. Since the Viking missions of the 1970s, planetary scientists have changed their perception of water on Mars several times, passing from the picture of a dry planet to that of a warmer and wetter one.
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Feb 20, 2024 · NASA's Mars Reconnaissance Orbiter found evidence that suggests Mars had liquid water for about a billion years longer than scientists previously thought.
