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Delta II Prepared to Launch NPP
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Delta II Prepared to Launch NPP

January 15, 2013
At Vandenberg Air Force Base's Space Launch Complex-2 in California, a United Launch Alliance Delta II rocket stands ready to launch NASA’s National Polar-orbiting Operational Environmental Satellite System Preparatory Project (NPP) spacecraft into Earth orbit. Image credit: NASA/Kim Shiflett Oct. 27, 2011