4 Min Read The Iconic Photos from STS-41B: Documenting the First Untethered Spacewalk Astronaut Bruce McCandless II, STS-41B mission specialist, reaches his maximum distance from space shuttle Challenger before returning to the spacecraft using the Manned Maneuvering Unit (MMU). Credits: NASA 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…
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