Space ShuttleSpace Shuttle Columbia lifts off on the 61st shuttle mission, a two-week visit to Earth orbit carrying two cargo-bay-mounted experiment systems operated primarily from the ground. Crew members participate in experiments involving the side-effects of long-term space travel. The crew for Columbia’s 16th flight consists of Commander John Casper, Pilot Andrew Allen, and mission specialists Pierre Thuot, Charles Gemar and Marsha Ivins.