Spacecraft
Mission
Crew
Operational Period
Mercury
Demonstrate feasibility of manned space flight
1 man
1961-1963
Gemini
Develop advanced space flight technology for Apollo (rendezvous and docking, work outside of spacecraft, 14-day duration flight, etc.)
2 men
1965-1966
Apollo Command/Service Module (CSM)
Support lunar exploration and earth orbit studies
3 men
1968-1975
Apollo Lunar Module (LM)
Provide base for lunar exploration
1969-1972
Lunar Roving Vehicle (LRV)
Enable exploration at remote distances from the Lunar Module
2
1971-1972
Skylab space station
Study earth and sun environments, human physiology, material processing
May 1973-February 1974
Space Shuttle(Space Transportation System - STS)
Provide routine access to space
2 to 8
1981-2011
Manned Maneuvering Unit (MMU)
Allow astronaut to maneuver outside of the Space Shuttle payload bay
1
1984
NASA photos; Mercury by HSS
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