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Delta II Second Stage Engine
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Delta II Second Stage Engine

January 15, 2013
At Vandenberg Air Force Base in California, the AJ10 engine for the second stage of a United Launch Alliance Delta II rocket is hoisted up in the service tower at NASA’s Space Launch Complex 2. The rocket’s first stage with several solid rocket motors attached sits on the launch pad to the right. The Delta II will carry NASA's National Polar-orbiting Operational Environmental Satellite System Preparatory Project (NPP) satellite into space. Image credit: NASA/VAFB Aug. 2, 2011