Space Shuttle Challenger Embarks on STS-41B Mission

On Feb. 3, 1984, space shuttle Challenger embarked on its fourth flight, STS-41B, marking a significant milestone in space exploration. The mission included practicing tasks required for the upcoming Solar Maximum Mission satellite retrieval and repair mission, successful test flights of the Manned Maneuvering Unit (MMU) astronaut propulsion device during two untethered spacewalks, and the successful deployment of two commercial communications satellites, Westar VI and Palapa-B2. The crew for STS-41B was announced on Feb. 4, 1983, and the mission’s objectives underwent changes, ultimately including the Shuttle Pallet Satellite-01A (SPAS-01A) and practicing rendezvous maneuvers with the Integrated Rendezvous Target (IRT), an inflatable 6-foot balloon deployed from the payload bay.