Air Force Launches Secretive X-37B Space Plane on Mystery Mission

Air Force Launches Secretive X-37B Space Plane on Mystery Mission
A United Launch Alliance Atlas 5 rocket with the Air Force’s Orbital Test Vehicle (OTV) launches from its Space Launch Complex-41 launch pad at 7:52 p.m. EDT on April 22, 2010.
(Image: © Pat Corkery/United Launch Alliance.)

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