Space Shuttle Discovery rests on the hardstand of Launch Pad 39B at NASA's Kennedy Space Center after completing the journey from the Vehicle Assembly Building.

Amid the glow of lights from the fixed and rotating service structures, Space Shuttle Discovery rests on the hardstand of Launch Pad 39B at NASA's Kennedy Space Center after completing the 4.2-mile journey from the Vehicle Assembly Building. First motion was at 12:45 p.m. EDT. The shuttle rests on a mobile launcher platform. The rollout is an important step before launch of Discovery on mission STS-121 to the International Space Station. First motion of the shuttle leaving NASA's Vehicle Assembly Building was at 12:45 p.m. EDT. Discovery's launch is targeted for July 1 in a launch window that extends to July 19. During the 12-day mission, Discovery's crew will test new hardware and techniques to improve shuttle safety, as well as deliver supplies and make repairs to the station. Photo credit: NASA/Ken Thornsley