American Space Flight Programs By ramseychapline Period: Apr 30, 1958 to Apr 30, 1963 Project Mercury Period: Apr 30, 1961 to Apr 30, 1966 Project Gemini Period: Apr 30, 1961 to Apr 30, 1979 Apollo Program Period: Apr 30, 1969 to Apr 30, 2011 Space Shuttle Period: Apr 30, 1998 to Apr 30, 2015 International Space Station