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Cradled in the cargo hold of a tractor-trailer rig called the Space Cargo Transportation System, the Chandra X-ray Observatory waits to be moved inside the Vertical Processing Facility (VPF). Chandra arrived at the Shuttle Landing Facility on Thursday, Feb. 4, aboard an Air Force C-5 Galaxy aircraft. In the VPF, the telescope will undergo final installation of associated electronic components; it will also be tested, fueled and mated with the Inertial Upper Stage booster. A set of integrated tests will follow. Chandra is scheduled for launch July 9 aboard Space Shuttle Columbia, on mission STS…