Countdown to Apollo at 50 is our multi-year celebration of the Apollo Space Program. Our Space Gallery featuring the Lunar Module is the largest collection of Apollo artifacts on display in the world. Learn about the Apollo Program and Project Apollo. Did you know that Long Island was one of the most important regions in the country involved in the success of landing man on the moon? From 1961 to 1972, Grumman employees, designed, assembled, and tested the Apollo Lunar Modules that successfully landed 12 men on the moon between 1969-1972. In all, Grumman built ten Lunar Modules, seven of which went into space and three that remain here on earth. One is at the Kennedy Space Center, one at the Smithsonian Museum, and the third is here at the Cradle of Aviation Museum. Long Island and Grumman’s role in the Apollo program is the focus of the Cradle of Aviation Museum’s celebration, “Countdown to Apollo at 50”.