Senior researchers say recent experiments in Chile could explain why NASA’s Viking landers apparently found no evidence of microbial life on Mars in 1976. Rafael Navarro-Gonzalez and a geophysical team from the National Autonomous University of Mexico (UNAM) suggest that data from Viking may have been misinterpreted, and that carbon-rich organic molecules may be present on Mars after all. The renewed interest in the Viking data stems from the discovery of perchlorate by the Phoenix Mars ...

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