Juno-I – Chrysler Family: Redstone Length: 21.2 meters Diameter: 1.78 meters Launch Mass: 29 Low Earth Orbit Capacity: 11 The Juno-I was manufactured by Chrysler with the first launch on 1958-01-31. Juno-I has 0 successful launches and 0 failed launches with a total of 0 launches. The Juno I was a four-stage American booster rocket which launched America’s first satellite, Explorer 1 in 1958. A member of thr redstone family, it was derived from the Jupiter-C sounding rocket. Manufacturer In July 1959, NASA chose the Redstone missile as the basis for the Mercury-Redstone Launch Vehicle to be used for suborbital test flights of the Project Mercury spacecraft. Three unmanned MRLV launch attempts were made between November 1960 and March 1961, two of which were successful. The MRLV successfully launched the chimpanzee Ham, and astronauts Alan Shepard and Gus Grissom on three suborbital flights in January, May and July 1961, respectively. Chrysler is a Commercial USA entity that was founded in 1950 and is administered by . Chrysler has 2 successful launches and 0 failed launches with a total of 2 launches.