|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 launchpad 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
2 days, conducting joint experiments and exchanging national mementos.