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CAPE CANAVERAL, Fla. – The Russian AH-124-100 aircraft arrives at Cape Canaveral Air Force Station's skid strip in Florida carrying the Centaur stage of the Atlas V rocket that will launch NASA's Lunar Reconnaissance Orbiter, or LRO, and NASA's Lunar CRater Observation and Sensing Satellite, known as LCROSS. The two spacecraft will be integrated with the Atlas V and tested for final flight worthiness. Launch is scheduled for the spring. LCROSS and LRO are the first missions in NASA's plan to return humans to the moon and begin establishing a lunar outpost by 2020. Photo credit: NASA/Troy Cryder