25-11-2015 09:26 via indianexpress.com

Mystery of ‘missing’ carbon on Mars decoded

UV rays from Sun caused Mars to lose its atmospheric carbon dioxide. ( Source: PTI photo)
Scientists have found that ultraviolet (UV) rays from Sun caused Mars to lose its atmospheric carbon dioxide, solving the long-standing mystery of the ‘missing’ carbon on the red planet.
Mars is blanketed by a thin, mostly carbon dioxide atmosphere that is too thin to keep water from freezing or quickly evaporating. However, geological evidence has led scientists to conclude that ancient Mars w
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