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Bruce McCandless II (born Byron Willis McCandless;[2] June 8, 1937 – December 21, 2017) was a United States Navy officer and aviator, electrical engineer, and NASA astronaut. In 1984, during the first of his two Space Shuttle missions, he completed the first untethered spacewalk by using the Manned Maneuvering Unit.
Bruce McCandless II
McCandless in 1971
Born
Byron Willis McCandless[2]
June 8, 1937
Boston, Massachusetts, United States
Died
December 21, 2017 (aged 80)
Los Angeles, California, U.S.
Resting place
United States Naval Academy Cemetery
Nationality
American
Alma mater
USNA, B.S. 1958
Stanford U., M.S. 1965
UHCL, M.B.A. 1987
Occupation(s)
Naval Aviator, engineer
Space career
NASA Astronaut
Rank
Captain, USN
Time in space
13 days 0 hours 31 minutes
Selection
1966 NASA Group 5
Total EVAs
2
Total EVA time
12 hours 12 minutes[1]
Missions
STS-41-B, STS-31
Mission insignia
Retirement
August 31, 1990
Spouse(s)
Bernice Doyle McCandless, Ellen Shields McCandless
Children 2He was the first man to walk in space untethered. In April 1983, NASA Astronaut Bruce McCandless II, a mission specialist, participates in an extravehicular activity a few meters away from the cabin of the shuttle Challenger during the STS-41B mission.