Follow this link to skip to the main content National Aeronautics and Space Administration Logo
NASA Banner
Mars Exploration Program
Home
MULTIMEDIA

Images

If the atmosphere of Mars contains methane, various possibilities have been proposed for where the methane could come from and how it could disappear.
11.02.2012
Potential Sources and Sinks of Methane on Mars
If the atmosphere of Mars contains methane, various possibilities have been proposed for where the methane could come from and how it could disappear.

Potential non-biological sources for methane on Mars 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 have ever lived on Mars. Potential sinks for removing methane from the atmosphere are photochemistry in the atmosphere and loss of methane to the surface.

Image Credit: NASA/JPL-Caltech, SAM/GSFC

Browse Image  |  Medium Image  |  Full Res Image (NASA's Planetary Photojournal)

<< RETURN TO IMAGES

USA.gov
PRIVACY     FAQ     SITEMAP     FEEDBACK     IMAGE POLICY