Scientists discover why Mars is losing a disturbing amount of atmosphere every second
Billions of years ago, Mars looked a lot like Earth, scientists suspect. But something happened 3.7 billion years ago that severely changed the Red Planet's climate and, over time, left the surface dry, desolate, and frozen — a lifeless shell of its former self. For years, planetary scientists have wondered where all the surface water and atmospheric carbon dioxide — important for possible plant growth — went.
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