ASU instruments help scientists probe ancient Mars atmosphere
Tempe AZ (SPX) Sep 03, 2015 - Mars was not always the arid Red Planet that we know today. Billions of years ago it was a world with watery environments - but how and why did it change? A new analysis of the largest known deposit of carbonate minerals on Mars helps limit the range of possible answers to that question. The Martian atmosphere currently is cold and thin - about 1 percent of Earth's - and almost entirely ca ... more
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