Fixed nitrogen: Mars was once habitable

March 30, 2015 6:17 PM

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Fixed nitrogen: Mars was once habitable

The Mars rover Curiosity has for the first time found evidence of indigenous nitrogen in the form of nitrate in aeolian deposits and in two mudstone deposits on the red planet. This discovery has great implications for habitability and, “specifically for the potential evolution of a nitrogen cycle at some point in Martian history.”

The results were published a few days ago in the journal Proceedings of the National Academy of Sciences (PNAS).

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