Sep 25 1999
From The Space Library
Space Shuttle Columbia, the oldest of NASA's four orbiters, landed at a U.S. Air Force plant in California for a "long-overdue tune-up." The orbiter's overhaul, expected to last until July 2000, came months late because of delays related to the launch of the Chandra X-ray Observatory. Columbia astronauts had deployed Chandra during a mission in July 1999. The inspection and overhaul was Columbia's fourth since entering service in 1981.
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