Spectators watch the Final Launch of STS-135 Atlantis

STS135-S-036 (8 July 2011) --- Members of the media and employees gather near the countdown clock to see the launch of space shuttle Atlantis as it lifts off Launch Pad 39A at NASA's Kennedy Space Center in Florida at 11:29 a.m. (EDT) on July 8, 2011. Onboard are NASA astronauts Chris Ferguson, STS-135 commander; Doug Hurley, pilot; Sandy Magnus and Rex Walheim, both mission specialists. STS-135 will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. Photo credit: NASA