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A comment on Previous Evidence of Water on Mars Now Identified as Grainflows. Parent comment

Re:Previous Evidence of Water on Mars Now Identified as Grai... by mabbo on Tuesday November 21, 2017 @09:27AM (#15748014)
Ah, teaches me for trying to write before my morning caffeine.

Oxygen. Oxygen is what Mars already has, in the form of CO2, carbon dioxide.

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