STS042-S-093 (30 Jan 1992) --- Space Shuttle Discovery is just about to ease down its main gear on Runway 22 at Edwards Air Force Base in southern California. Main gear touchdown occurred at 8:07:18 a.m. (PST), Jan. 30, 1992. The successful landing completed an eight-day mission for five NASA astronauts and two payload specialists supporting the first International Microgravity Laboratory (IML-1) mission. Onboard were astronauts Ronald J. Grabe, mission commander; Stephen S. Oswald, pilot; Norman E. Thagard, payload commander; 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).