STS042-S-094 (30 Jan 1992) --- Space Shuttle Discovery lands on Runway 22 at Edwards Air Force Base in southern California to complete an eight-day mission. Main gear touchdown occurred at 8:07:18 a.m. (PST), Jan. 30, 1992. The crewmembers aboard Discovery for the first International Microgravity Laboratory (IML-1) mission were astronauts Ronald J. Grabe, mission commander; Stephen S. Oswald, pilot; Norman E. Thagard, payload commander; and David C. Hilmers and William F. Readdy, both mission specialists; and payload specialists Roberta L. Bondar of Canada and Ulf Merbold, representing the European Space Agency (ESA).