RSS Rollback Reveals Atlantis
Space shuttle Atlantis is revealed on Launch Pad 39A at NASA's Kennedy Space Center in Florida following the move of the rotating service structure (RSS).
The structure provides weather protection and access to the shuttle while it awaits liftoff on the pad.
RSS "rollback" marks a major milestone in Atlantis' STS-135 mission countdown.
Photo credit: NASA/Troy Cryder
July 7, 2011