NASA - National Aeronautics and Space Administration

One of Phoenix's first images from the Martian surface, a photo of one of its legs. Image credit: NASA/JPL-Calech/University of Arizona NASA's Phoenix Mars Lander is on the Red Planet. Phoenix and its scientific instruments are set to uncover clues to the geologic history and biological potential of the Martian arctic, investigating whether the site could once have supported microbial life on Mars.

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