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Details
dentical U.S. spacecraft carrying robotic explorers are headed for Mars. In January 2004, the first will touch the planet's surface--and NOVA will immediately begin transmitting the latest clues in the search for extraterrestrial life. This special recounts the dramatic design, testing, and launch of the two crafts, and will climax with the first probe's historic entry, descent, and landing on Earth's nearest planetary neighbor.
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