The astronaut was 37y 8 m 4d when making a first step on the moon one  was in which service?
Name Born Age at first step Mission Lunar EVA dates Service
List of Apollo astronauts
129540
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2-129540-1
Apollo astronauts who walked on the Moon
Apollo astronauts who walked on the Moon
Neil Armstrong August 5, 1930 38y 11m 15d Apollo 11 July 21, 1969 NASA
Buzz Aldrin January 20, 1930 (age84) 39y 6m 0d Apollo 11 July 21, 1969 Air Force
Pete Conrad June 2, 1930 39y 5m 17d Apollo 12 November 19–20, 1969 Navy
Alan Bean March 15, 1932 (age81) 37y 8m 4d Apollo 12 November 19–20, 1969 Navy
Alan Shepard November 18, 1923 47y 2m 18d Apollo 14 February 5–6, 1971 Navy
Edgar Mitchell September 17, 1930 (age83) 40y 4m 19d Apollo 14 February 5–6, 1971 Navy
David Scott June 6, 1932 (age81) 39y 1m 25d Apollo 15 July 31 – August 2, 1971 Air Force
James Irwin March 17, 1930 41y 4m 14d Apollo 15 July 31 – August 2, 1971 Air Force
John W. Young September 24, 1930 (age83) 41y 6m 28d Apollo 16 April 21–23, 1972 Navy
Charles Duke October 3, 1935 (age78) 36y 6m 18d Apollo 16 April 21–23, 1972 Air Force
Eugene Cernan March 14, 1934 (age79) 38y 9m 7d Apollo 17 December 11–14, 1972 Navy
Harrison Schmitt July 3, 1935 (age78) 37y 5m 8d Apollo 17 December 11–14, 1972 NASA
SELECT Service FROM table WHERE Age at first step = 37y 8m 4d
37y 8m 4d