In the early 1960s, Ames Research Center, in conjunction with the National Aeronautics and Space Administration (NASA) started the Pioneer Jupiter Project. The primary objectives of this project were to explore the environments of Jupiter and Saturn, collect data regarding the outer heliosphere, and to investigate the nature of the asteroid belt that is located between the orbits of Jupiter and Mars. In order to accomplish these objectives, two spacecraft were built. Pioneer 10 and Pioneer 11, as