Rotating Service Structure Opens For Launch

The rotating service structure (RSS) on NASA Kennedy Space Center’s Launch Pad 39A moved away from space shuttle Discovery in preparation for tomorrow's launch attempt. The move began at 8:02 p.m. EST and was completed at 8:37 p.m. Moving the structure, which is used for weather protection and provides access to the shuttle at the pad, took about 30 minutes.

Teams are not working any issues that would delay liftoff at 4:50 p.m.

Fueling of Discovery's external fuel tank with more than 535,000 gallons of super cold liquid hydrogen and oxygen is expected to begin at approximately 7:25 a.m. NASA TV coverage begins at 7:15 a.m.