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NASA just witnessed its biggest methane gas emission on Mars

During a follow-up test over the weekend, though, scientists found that the methane levels around the rover had already dropped sharply. Curiosity detected normal methane levels (1 part per billion by volume) following the sudden elevation, suggesting that the abnormally high values ​​came from transient methane plumes. So, what does that mean? Well, Paul Mahaffy, the principal investigator for Curiosity's Sample Analysis at Mars instrument, said during a townhall event: "A plume came and plume went."

Curiosity unfortunately does not have the tools to determine whether the source of methane is biological or geological. Further, scientists have yet to figure out Martian's transient plumes. In other words, they are still close to unraveling the planet's methane mystery. They need to gather more information through Curiosity and from other missions to gaining understanding of the plumes. When they finally understand where the plumes are coming from, maybe they can figure out whether the presence of the planet is truly a sign of life.

Ashwin Vasavada, Curiosity project scientist at NASA's JPL, said: [1

9659004] "The methane mystery continues. We're more motivated than ever to measure and put our brains together to figure out how methane behaved in the Martian atmosphere."

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