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Recent observations have detected methane in the Martian atmosphere, which poses intriguing questions about potential subsurface biological or geological activity. Methane is known to break down under ultraviolet light within a few hundred years, indicating that the detected methane must have been generated recently. The spatial and temporal variations of methane concentrations suggest localized releases, possibly from the subsurface. This discovery may provide critical insights into the planet's current processes and the potential for past or present life.
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