The gas might have been emitted from microscopic organisms living under the Martian surface, the scientists said, although it could also have come from geochemical processes not connected with life. The research, funded by Nasa, the US space agency, was published in the online edition of the journal Science.
科學家們表示，這股氣體可能是生存在火星表層下面的顯微生物釋放出來的，但也有可能來自與生命無關的地球化學活動。由美國國家航空航天局(Nasa)資助的這項研究發表在《科學》(Science)雜志的網絡版上。
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