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No Methane on Mars?

• arclein
n 2009, Michael Mumma of NASA’s Goddard Space Flight Center in Greenbelt, Maryland used an Earth-based telescope and found hotspots of methane that appeared seasonally. Methane is quickly destroyed by ultraviolet radiation in the Martian atmosphere, usually after only a few hundred years, so the gas could not be left over from some era millions of years ago. The detection excited much of the scientific

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