Scientists discover potential source of methane on Mars

An international team of scientists has for the first time identified a potential source of methane gas on Mars, almost six years after NASA's Curiosity rover first detected hints of the gas on the Red Planet, and which may aid in future space missions. The team, including researchers from the National Institute of Astrophysics in Rome, have found that methane gas detected by the Curiosity rover in 2013 may have been released from a layer of permafrost containing bubbles of the gas that was fractured by a geological event, the Guardian reported on Monday.

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