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Forty years ago, we landed on Mars… and found life? (Synopsis) [Starts With A Bang]

Tuesday, July 19, 2016 15:49

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“This suggests a robust biological response. These analyses support the interpretation that the Viking LR experiment did detect extant microbial life on Mars.” -Bianciardi, Miller, Straat and Levin

On July 20, 1976, the Viking 1 lander touched down onto the Martian surface, followed just a few weeks later by Viking 2. On board both landers were a suite of three experiments designed to look for signs of life.

NASA Viking Lander Biological Experiment Package. Image credit: NASA.

While the Gas Chromatograph-Mass Spectrometer and the Gas Exchange experiment both came back negative, the Labeled Release experiment — where nutrient-rich molecules tagged with radioactive carbon-14 were added to the Martian soil — gave off a positive release of radioactive CO2.

The Viking 2 lander on the Martian surface. Image credit: NASA.

Did our first trip to Mars really find life after all?

Source: http://scienceblogs.com/startswithabang/2016/07/19/forty-years-ago-we-landed-on-mars-and-found-life-synopsis/

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