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First untethered spacewalk

First untethered spacewalk
Who
Bruce McCandless
What
First
Where
Not Applicable (low Earth orbit,)
When
07 February 1984

NASA astronaut Capt. Bruce McCandless II, USN (b. 8 June 1937), was the first person to perform an untethered spacewalk from the space shuttle Challenger, on 7 February 1984. His spacewalk was a successful test of the Manned Maneuvering Unit.