Want more? Subscribe to NASA on iTunes! http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=283424434 Mike Mumma and his team of researchers at Goddard Space Flight Center have made the first definitive observations of methane in the atmosphere of Mars. The evidence of methane plumes only during certain seasons and the chemical processes that could lead to its possible sources both raise intriguing questions for future study. For more info: http://www.nasa.gov/mission_pages/mars/news/marsmethane.html
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