STS083-489-021 (4-8 April 1997)--- Astronaut James D. Halsell, Jr., mission commander, checks on an experiment in the Astro-Planet Generic Bioprocessing Apparatus onboard the Earth-orbiting Space Shuttle Columbia. The Microgravity Sciences Laboratory (MSL-1) completed about one-fourth of its manifest time frame prior to being cut short by a power shortage.