Saturn Apollo Program

The final launch of a Saturn rocket came on July 15, 1975 as part of the Apollo-Soyuz Test Project. Earlier that day, a Russian Soyuz spacecraft lifted off its launch pad at a Soviet launch site carrying three cosmonauts. Seven and one-half hours later, the U.S. Apollo spacecraft was launched with its crew of American astronauts. Rendezvous and docking of the two ships were accomplished on July 17. The two ships remained docked for two days, conducting joint experiments and exchanging national mementos. In this photograph, astronauts Donald Slayton and Thomas Stafford chat with cosmonaut Alexei Leonov during their visit to the Soyuz Orbital Module.