Thor-Delta

Thor-Delta was a family of American space launch vehicles used primarily from the 1960s to the 1980s. It combined parts from two different rocket series—"Thor," a solid-fueled missile, and "Delta," an upper stage for delivering satellites into orbit. This combination allowed for reliable and versatile satellite launches, including communications, weather, and scientific missions. The Thor-Delta rockets played a crucial role in early space exploration and satellite deployment, paving the way for modern launch systems.