KSC-06pd0831

KENNEDY SPACE CENTER, FLA. -- The orbiter Discovery is lowered via a crane and sling into high bay 3 of NASA's Vehicle Assembly Building. Discovery will be mated with its external tank and twin solid rocket boosters waiting below on the mobile launcher platform. Space Shuttle Discovery is expected to roll out to Launch Pad 39B later this week via the crawler-transporter. Launch of Discovery on mission STS-121 is scheduled to take place in a window extending July 1 to July 19. Photo credit: NASA/Charisse Nahser