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| Possible Methane Sources and Sinks |
Present and Active Methane in Mars’ Atmosphere
The Tunable Laser Spectrometer within the SAM instrument detected a seasonally varying background level of atmospheric methane and observed a ten-fold increase in methane over a two-month period. The discovery of methane is exciting because methane can be produced by living organisms or by chemical reactions between rock and water, for example. Which process is producing methane on Mars? What caused the brief and sudden increase?
https://science.nasa.gov/mission/msl-curiosity/science-highlights/
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