alexa Detection of methane in the atmosphere of Mars.
Infectious Diseases

Infectious Diseases

Air & Water Borne Diseases

Author(s): Formisano V, Atreya S, Encrenaz T, Ignatiev N, Giuranna M

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Abstract 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. This article was published in Science and referenced in Air & Water Borne Diseases

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