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The Viking 1 Lander, illustrated in this model, touched down on the western slope of Mars' Chryse Planitia (the Plains of Gold) on July 20, 1976. | NASA
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Viking Found Organics on Mars, Experiment Confirms

An experiment has confirmed that Viking found organics on Mars. Learn about the experiment that confirmed that Viking found organics on Mars.

January 4, 2011
3:00 AM EST