wang flew on sts-51b "challenger" (april 29-may 6, 1985). sts-51b/spacelab-3 was launched from kennedy space center, florida, and returned to land at edwards air force base, california. it was the first operational spacelab mission. the seven-man crew aboard "challenger" conducted investigations in crystal growth, drop dynamics leading to containerless material processing, atmospheric trace gas spectroscopy, solar and planetary atmospheric simulation, cosmic rays, laboratory animals and human medical monitoring.