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First Direct Evidence of How Mars Lost Its Thick Atmosphere and Water

For years, scientists have puzzled over how Mars lost the thick atmosphere it once had. That atmosphere was essential for liquid water to exist on the planet’s surface, billions of years ago. Today, new data from NASA’s Mars Atmosphere and Volatile Evolution mission—MAVEN—finally brings answers. After nearly a decade in orbit, MAVEN has delivered the first direct observations of a powerful and long-suspected process known as sputtering. This bre…
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Mars Daily broke the news in Australia on Monday, June 2, 2025.
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