This artist concept features NASA's Mars Science Laboratory Curiosity rover, a mobile robot for investigating Mars' past or present ability to sustain microbial life. In this picture, the mast, or rover's head, rises to about 2.1 meters (6.9 feet) above ground level. This mast supports two remote-sensing instruments: the Mast Camera, or eyes, for stereo color viewing of surrounding terrain and material collected by the arm; and, the ChemCam instrument, which is a laser that vaporizes material from rocks up to about 9 meters (30 feet) away and determines what elements the rocks are made of.
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