View of the aft portion of <a href="//commons.wikimedia.org/wiki/Space_Shuttle_Discovery" class="mw-redirect" title="Space Shuttle Discovery">space shuttle Discovery</a>, including the three main <a href="//commons.wikimedia.org/wiki/Engine" title="Engine">engines</a>, provided by the <a href="//commons.wikimedia.org/wiki/Category:ISS_Expedition_23" title="Category:ISS Expedition 23">Expedition 23</a> crew during a survey as STS-131 approached the <a href="//commons.wikimedia.org/wiki/International_Space_Station" title="International Space Station">International Space Station</a>. As part of the survey and part of every mission's activities, Discovery performed a back-flip for the rendezvous pitch manoeuvre (RPM). The image was photographed with a <a href="//commons.wikimedia.org/wiki/Category:Digital_cameras" title="Category:Digital cameras">digital still camera</a>, using a 400mm <a href="//commons.wikimedia.org/wiki/Lenses" title="Lenses">lens</a> at a distance of about 180 meters.
NASA
2010-04-07
<a rel="nofollow" class="external text" href="http://spaceflight.nasa.gov/gallery/images/shuttle/sts-131/html/iss023e020004.html">STS-131 Shuttle Mission Imagery</a>