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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.

Delta II Readies for Liftoff

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

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