Watch The Mighty Saturns: Saturn I and IB (2003) : Full Movie Online Free The Saturn I and IB were the first steps in developing large, clustered launch vehicles which eventually provided the power for the United States' exploration of space. Born of a U.S. Army project, the Saturns were transferred to NASA and adopted to carry man into Earth orbit. The lessons learned from the early Saturns were applied to developing the Saturn V moon rocket, and were essential vehicles on America's road to mission success.