The six astronauts pause to begin final launch preparations for space shuttle Endeavour's mission.

The six STS-134 astronauts pause for a photo after arrival at NASA Kennedy Space Center's Shuttle Landing Facility in Florida, to begin final launch preparations for space shuttle Endeavour's mission to the International Space Station scheduled for Monday, May 16 at 8:56 a.m. From left are Commander Mark Kelly, Mission Specialists Greg Chamitoff, Andrew Feustel, European Space Agency astronaut Roberto Vittori, Michael Fincke and Pilot Greg H. Johnson.

Endeavour and its crew will deliver the Express Logistics Carrier-3, Alpha Magnetic Spectrometer-2 (AMS), a high-pressure gas tank and additional spare parts for the Dextre robotic helper to the station. This will be the final spaceflight for Endeavour. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Kim Shiflett