The Iconic Photos from STS-41B: Documenting the First Untethered Spacewalk - NASA
Source: NASA
Jennifer Ross-Nazzal As astronaut Bruce McCandless II flew the Manned Maneuvering Unit (MMU) out of the space shuttle Challenger’s payload bay for the first time on February 7, 1984, many in the agency were fearful about the use of a self-propelled and untethered backpack in space. (Previous spacewalkers remained connected to the vehicle with tethers. This jet-pack allowed crews to move outside of the cargo bay…
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