NASA Mars Mission: No Little Green Men -- Yet
11/30/2012 NASA debunks rumors of new evidence of life on Mars, but its Curiosity rover continues to make many smaller discoveries. Some of NASA's latest images raise interesting questions.
Curiosity's Sample Analysis at Mars (SAM) instrument was at the center of speculation about a breakthrough "for the history books." This picture shows SAM, which is about the size of a microwave oven, as it being assembled at Goddard Space Flight Center. The system includes a tunable laser spectrometer (lower left), a quadrupole mass spectrometer (upper right), and gas chromatograph (lower right). Inlet tubes take in soil samples and powdered rock for analysis. Credit: NASA
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