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2012-11-04 08:39:49

Possible Sources & Sinks of Methane on Mars: Potential non-biological sources include comets, degradation of interplanetary dust particles by ultraviolet light, and interaction between water and rock. A potential biological source would be microbes, if microbes ever lived on Mars. Potential sinks for removing methane from the atmosphere are photochemistry in the atmosphere and loss of methane to the surface.

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