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Inside the Vertical Processing Facility, doors on the payload canister begin to close on the Chandra X-ray Observatory inside before being moved to Launch Pad 39B. Liftoff will take place no earlier than July 20 at 12:36 a.m. EDT aboard Space Shuttle Columbia, on mission STS-93. Chandra will allow scientists from around the world to obtain unprecedented X-ray images of exotic environments to help understand the structure and evolution of the universe. Chandra is expected to provide unique and crucial information on the nature of objects ranging from comets in our solar system to quasars at the…
