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.