1,351 applicants. The National Academy of Science was responsible for the final selection. NASA planned to select up to twenty, but the quality of the applicants was considered so poor that only six were named. Of those, four would fly in space. Geologist Schmitt would walk on the moon on the last Apollo mission, and only after pressure from the scientific community. The other three would fly on Skylab. Only Garriot would fly twice, supplementing his 59 days on Skylab with a ten-day shuttle mission.

NASA Group 4 - 1965

---

	Garriot	Dr Owen Kay Garriot. American Pilot Astronaut. Born 22 November 1930.
	Gibson Edward	Dr Edward George Gibson. American Pilot Astronaut. Born 8 November 1936.
	Graveline	Duane Edgar Graveline. American Pilot Astronaut. Born 2 March 1931.
	Kerwin	Dr Joseph Peter Kerwin. American Pilot Astronaut. Born 19 February 1932. Member of first successful space station mission.
	Michel	Dr Frank Curtis Michel. American Pilot Astronaut. Born 5 June 1934.
	Schmitt	Dr Harrison Hagan (Jack) Schmitt. American Pilot Astronaut. Born 3 July 1935. Twelvth person and only geologist to walk on the moon.