A closeup of Space Shuttle Discovery shows the White Room left extended at the entrance to the crew compartment.

A closeup of Space Shuttle Discovery on Launch Pad 39A shows the White Room (left) extended to the side of the orbiter, at the entrance to the crew compartment. Discovery is undergoing final launch preparations of STS-92. Scheduled to lift off Oct. 5 at 9:38 p.m. EDT, Discovery will be making the 100th Space Shuttle mission launched from Kennedy Space Center. Discovery also will be making its 28th flight into space, more than any of the other orbiters to date. STS-92 is a mission to the International Space Station, carrying the Z1 truss, which is the first of 10 trusses on the Station, and the third Pressurized Mating Adapter