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iss023e020004

February 9, 2012
ISS023-E-020004 (7 April 2010) --- This view of the aft portion of the space shuttle Discovery, including the three main engines and part of the wings, was provided by an Expedition 23 crew member during a survey of the approaching vehicle prior to docking with the International Space Station. As part of the survey and part of every mission's activities, the STS-131 Discovery crew performed a back-flip for the rendezvous pitch maneuver (RPM). The image was photographed with a digital still camera, using a 400mm lens at a distance of about 600 feet (180 meters).