A Martian methane belch melts away
Scientists have tracked seasonal rise and fall in backround methane levels but haven't been able to establish a pattern for the transient plumes (AFP Photo/HO)/ Washington (AFP) - The mystery of the Martian methane continues. NASA's Curiosity Rover last week detected the highest ever levels of the colorless, odorless gas over the course of its seven year mission on the Red Planet, raising hopes it could be evidence of the existence of microbial life. But a follow-up experiment this weekend found the methane had returned to background ...
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