NASA Challenger Mission STS-41-B

Space Shuttle Challenger Mission STS-41-B footage, narrated by members of the mission crew. NASA Astronauts Bruce McCandless II and Robert L. Stewart conducting untethered extravehicular activity (EVA) spacewalks in the Manned Maneuvering Unit (MMU). Astronaut operating the MMU upside down, above the Space Shuttle Challenger payload bay. Stewart discusses conserving fuel in the MMU; Astronaut in full spacesuit operating the MMU above Challenger. Astronaut working on Challenger in the MMU. Loose footplate equipment floating away from the Challenger payload bay. Astronaut Vance D. Brand discusses moving Challenger to retrieve the loose footplate; Astronaut retrieving a loose footplate in space.