Oswald piloted two missions aboard the Space Shuttle Discovery, STS-42 and STS-56 flown in January 1992 and April 1993, respectively. The International Microgravity Laboratory-1, the primary payload on STS-42, included 55 major microgravity experiments conducted over the eight-day flight in Discovery's Spacelab module. STS-56 was the second Atmospheric Laboratory for Applications and Science (ATLAS-2) mission. This nine-day flight also included the deployment and retrieval of the SPARTAN spacecraft.
Most recently, Oswald commanded STS-67, the second flight of the Astro observatory (Astro II), which flew on the Space Shuttle Endeavour in March, 1995. In addition to collecting an unprecedented amount of ultraviolet astronomy data, STS-67 also established a mission duration record for Space Shuttle at 17 days. With the completion of his third space flight, Oswald has logged over 33 days in space.
Manned seven crew. Carried International Microgravity Laboratory-1. Payloads: International Microgravity Laboratory (lML)-1, getaway special (GAS) bridge with 10 getaway specials, IMAX camera, Gelation of Sols: Applied Microgravity Research (GOSAMR)-1, Investigations Into Polymer Mem-brane Processing (IPMP), Radiation Monitoring Equipment (RME)-lll, Student Experiment 81-09: Convection in Zero Gravity, Student Experiment 83-02: Capillary Rise of Liquid Through Granular Porous Media.
Manned five crew. Carried Atlas-2; deployed and retrieved Spartan 201. Payloads: Atmospheric Laboratory for Applications and Science (ATLAS) 2, Shuttle Solar Backscat-ter Ultraviolet (SSBUV) A, Shuttle Pointed Autonomous Research Tool for Astronomy (SPARTAN) 201 (Solar Wind Generation Experi-ment), Solar Ultraviolet Experiment (SUVE), Commercial Material Dispersion Apparatus (CMIX), Physiological and Anatomical Rodent Experiment (PARE), Hand-held, Earth-oriented, Real-time, Cooperative, User-friendly, Location-targeting, and Environmental System (HER-CULES), Shuttle Amateur Radio Experiment (SAREX) II, Space Tissue Loss (STL), Air Force Maui Optical Site (AMOS), Cosmic Radiation Effects and Activation Monitor (CREAM), Radiation Monitoring Equipment (RME) III.
Carried Astro 2 astronomy payload with 3 UV telescopes.(attached to Endeavour).Payloads: Ultraviolet Astronomy (ASTRO) 2; Middeck Active Control Experiment (MACE); Protein Crystal Growth—Thermal Enclosure System (PCG-TES) 03; Protein Crystal Growth—Single-Locker Thermal Enclosure System (PCG-STES) 02; Commercial Materials Dispersion Apparatus Minilab/Instrumentation Technology Associates, Inc. Experiments (CMIX) 03; Shuttle Amateur Radio Experiment (SAREX) II; two getaway special experiments.