Lyndon B. Johnson Space Center
Houston, Texas 77058
On his first mission, Gregory was pilot on STS-51B/Spacelab-3 which launched from Kennedy Space Center, Florida, on April 29, 1985. The crew on board the Orbiter Challenger included spacecraft commander, Robert Overmyer; mission specialists, Norman Thagard, William Thornton, and Don Lind; and payload specialists, Taylor Wang and Lodewijk Vandenberg. On this second flight of the European Space Agency (ESA) developed laboratory, the crew members conducted a broad range of scientific experiments ranging from space physics to the suitability of animal holding facilities. The crew also deployed the Northern Utah Satellite (NUSAT). After seven days of around-the-clock scientific operations, Challenger and its laboratory cargo landed on the dry lakebed at Edwards AFB, California, on May 6, 1985.
He was the spacecraft commander on STS-33 which launched, at night, from Kennedy Space Center, Florida, on November 22, 1989. On board the Orbiter Discovery, his crew included the pilot, John Blaha, and three mission specialists, Manley (Sonny) Carter, Story Musgrave, and Kathryn Thornton. The mission carried Department of Defense payloads and other secondary payloads. After 79 orbits of the earth, this five day mission concluded on November 27, 1989, with a hard surface landing on Runway 04 at Edwards AFB, California.
More recently, Colonel Gregory commanded a crew of six aboard the Orbiter Atlantis. STS-44 launched at night on November 24, 1991 from the Kennedy Space Center, Florida. During 110 orbits of the Earth the crew successfully deployed their prime payload, the Department of Defense Support Program (DSP) satellite in addition to working on a variety of secondary payloads ranging from the Military Man in Space experiment designed to evaluate the ability of a spaceborne observer to gathering information about ground troops, equipment and facilities, to participating in extensive studies evaluating medical countermeasures to long duration space flight. His crew included the pilot Tom Henricks, three mission specialists, Story Musgrave, Jim Voss, and Mario Runco Jr., and payload specialist Tom Hennen. The mission concluded on December 1, 1991 with a landing at Edwards Air Force Base in California.
With the completion of his third mission, Gregory has logged over 455 hours in space.
ARCHIVAL BIOGRAPHY LAST UPDATED MAY 1992