| "The Mars Exploration Rover Project" PMI-LA, SCQAA-LA, and Mt. Sierra College. Dr. John L. Callas, Deputy Project Manager NASA. In January, 2004 two intrepid robotic explorers set foot on an uncharted world, the surface of Mars! The two explorers, Spirit and Opportunity, began what was originally planned as a 90-day mission. Their assignment as robotic field geologists was to provide an assessment of the past geologic environment at two very different locations on the planet. See http://www.pmi-la.org |
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