Mission
Gemini V
Gemini XI
Apollo 12
Skylab 2
Dates
August 21-29, 1965
September 12-15, 1966
November 14-24, 1969
May 26-June 22, 1973
Role
Pilot
Commander
Commander
Commander
Notes
First use of fuel cells for electrical power
Mission
Gemini XI
Apollo 12
Dates
September 12-15, 1966
November 14-24, 1969
Role
Command Module Pilot
Notes
Mission
Apollo 12
Skylab 3
Dates
November 14-24, 1969
July 28-Sep 25, 1973
Role
Lunar Module Pilot
Commander
Notes