This is a 1:40 scale model of the Juno II rocket. The Juno II was the successor to the Juno I and was utilized by the National Aeronautics and Space Administration (NASA) beginning in late 1958 to launch satellites and probes. A four-stage rocket, the Juno II consisted of an extended liquid-fuel Army Jupiter intermediate-range ballistic missile as the first stage and three upper stages powered by scaled-down Army Sergeant solid-fuel missile engines. NASA utilized the Juno II in ten launches from 1958-1961, of which only three were successful. Thereafter, the cheaper and more reliable Scout replaced the Juno II as the primary launch vehicle for a wide range of small orbital payloads and experiments. This model was made by the Army Ordnance Missile Command, which donated it to NASM in 1960.