A handout image from NASA T.V. released on 08 April 2010 shows the underside of the crew cabin of the space shuttle Discovery provided by an Expedition 23 crew member during a survey of the approaching STS-131 crew to the International Space Station. As part of the survey and part of every mission's activities, Discovery 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). EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery comes out of its back flip maneuver underneath the International Space Station (ISS). Discovery docked with the International Space Station at 2:30 a.m. with the crew's of Discovery and the ISS meeting for the first time since launch. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery in its back flip maneuver underneath the International Space Station (ISS). Photos being taken from the ISS using a 400mm lens as Discovery flies 215 nautical miles above the earth. Discovery docked with the International Space Station at 2:30 a.m. with the crew's of Discovery and the ISS meeting for the first time since launch. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES EDITORIAL USE ONLY
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery in its back flip maneuver underneath the International Space Station (ISS). Photos being taken from the ISS using a 400mm lens as Discovery flies 215 nautical miles above the earth. Discovery docked with the International Space Station at 2:30 a.m. with the crew's of Discovery and the ISS meeting for the first time since launch. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery before its back flip maneuver underneath the International Space Station (ISS). Photos being taken from the ISS using a 400mm lens as Discovery flies 215 nautical miles above the earth. Discovery docked with the International Space Station at 2:30 a.m. with the crew's of Discovery and the ISS meeting for the first time since launch. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery in its back flip maneuver underneath the International Space Station (ISS). Photos being taken from the ISS using a 400mm lens as Discovery flies 215 nautical miles above the earth. Discovery docked with the International Space Station at 2:30 a.m. with the crew's of Discovery and the ISS meeting for the first time since launch. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery in its back flip maneuver underneath the International Space Station (ISS). Photos being taken from the ISS using a 400mm lens as Discovery flies 215 nautical miles above the earth. Discovery docked with the International Space Station at 2:30 a.m. with the crew's of Discovery and the ISS meeting for the first time since launch. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
A handout image made available by NASA T.V. on 07 April 2010, shows Space shuttle Discovery (L) docked to the International Space Station (ISS) and the earth off to the left as a backdrop. With Discovery approximately 215 nautical miles above the earth the payload is lifted from the cargo bay of shuttle Discovery using the Canada arm attached to the ISS. EPA/NASA T.V./HANDOUT BEST QUALITY FROM NASA TV EDITORIAL USE ONLY/NO SALES
