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Climate Cycles may explain how Running Water Carved Mars’ Surface features

Gale Crater on surface of Mars was once filled with liquid water for 10,000 to 10 million years, according to findings from the Mars Science Laboratory (MLS). A new study from Penn State scientists suggests dramatic climate cycles may have produced warm periods long enough to thaw the planet and create the water features on the surface today. From Topographic evidence for lakes in Gale Crater, abstract, 44th Lunar and Planetary Science Conference (2013). Credit: William Dietrich / University of California Berkley

Gale Crater on surface of Mars was once filled with liquid water for 10,000 to 10 million years, according to findings from the Mars Science Laboratory (MLS). A new study from Penn State scientists suggests dramatic climate cycles may have produced warm periods long enough to thaw the planet and create the water features on the surface today. From Topographic evidence for lakes in Gale Crater, abstract, 44th Lunar and Planetary Science Conference (2013). Credit: William Dietrich / University of California Berkley

Dramatic climate cycles on early Mars, triggered by buildup of greenhouse gases, may be the key to understanding how liquid water left its mark on the planet’s surface, according to a team of planetary scientists...

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