Space Shuttle Endeavour Launches Under Command Of Astronaut Mark Kelly
In this handout provided by National Aeronautics and Space Administration (NASA), NASA astronaut Greg Chamitoff during the mission's fourth STS-134 spacewalk outside the International Space Station (ISS) May 26, 2011 in space. During the spacewalk, Chamitoff and fellow astronaut Michael Fincke stowed the 50-foot-long boom and added a power and data grapple fixture to make it the Enhanced International Space Station Boom Assembly, which extends the reach of the space station's robotic arm. The docked space shuttle Endeavour is visible at top right. After 20 years, 25 missions and more than 115 million miles in space, NASA space shuttle Endeavour is on its final flight to the International Space Station before being retired and donated to the California Science Center in Los Angeles. Capt. Mark E. Kelly, U.S. Rep. Gabrielle Giffords' (D-AZ) husband, will lead mission STS-134 as it delivers the Express Logistics Carrier-3 (ELC-3) and the Alpha Magnetic Spectrometer (AMS-2) to the International Space Station.