Detection of Methane in the Atmosphere of Mars

Details Detection of Methane in the Atmosphere of Mars Detection of Methane in the Atmosphere of Mars

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sci...306.1758f&link_type=abstract

Science, Volume 306, Issue 5702, pp. 1758-1761 (2004).

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Scientific paper

We report a detection of methane in the martian atmosphere by the Planetary Fourier Spectrometer onboard the Mars Express spacecraft. The global average methane mixing ratio is found to be 10 +/- 5 parts per billion by volume (ppbv). However, the mixing ratio varies between 0 and 30 ppbv over the planet. The source of methane could be either biogenic or nonbiogenic, including past or present subsurface microorganisms, hydrothermal activity, or cometary impacts.

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