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Workers on Launch Pad 17-A, Cape Canaveral Air Force Station, oversee the Mars Odyssey orbiter as it is lowered toward the Boeing Delta II rocket. The spacecraft will map the Martian surface in search of geological features that could indicate the presence of water, now or in the past, and may contribute significantly toward understanding what will be necessary for a more sophisticated exploration of Mars. Launch is scheduled for 11:02 a.m. EDT April 7
