Lyndon B. Johnson Space Center
Houston, Texas 77058
STS-61, December 2-13, 1993, was the Hubble Space Telescope (HST) servicing and repair mission. During the 11-day flight, the HST was captured and restored to full capacity through a record five space walks by four astronauts.
STS-73, Oct. 20 to Nov. 5, 1995, was the second flight of the United States Microgravity Laboratory. The mission focused on materials science, biotechnology, combustion science, the physics of fluids, and numerous scientific experiments housed in the pressurized Spacelab module.
STS-82, Feb. 11-21, 1997, was the second Hubble Space Telescope (HST) maintenance mission. During the flight, the crew retrieved and secured the HST in Discovery's payload bay. In five space walks, two teams installed two new spectrometers and eight replacement instruments, as well as replacing insulation patches over three compartments containing key data processing, electronics and scientific instrument telemetry packages. Following completion of upgrades and repairs, HST was boosted to a higher orbit and redeployed.