Space Shuttle Endeavour

2009-05-31 – At NASA's Kennedy Space Center in Florida, flags swing in the breeze as Space Shuttle Endeavour approaches Launch Pad 39A. First motion of the 5.5-kilometer rollaround from Launch Pad 39B was at 3:16 a.m. EDT. Endeavour was on standby on Pad 39B to be used in the unlikely event that a rescue mission was necessary during Space Shuttle Atlantis' STS-125 mission to NASA's Hubble Space Telescope. The payload on STS-127 includes the Japan Aerospace Exploration Agency's Kibo Exposed Facility and the Experiment Logistics Module Exposed Section of the International Space Station. (Credit: NASA/Kim Shiflett)