ApolloSoyuz Test Project

The Apollo–Soyuz Test Project (ASTP) (Russian: ????????????????? ????? «????» -- «???????», Eksperimantalniy polyot Soyuz-Apollon, lit. "Experimental flight Soyuz-Apollo"), conducted in July 1975, was the first joint U.S.–Soviet space flight, as a symbol of the policy of détente that the two superpowers were pursuing at the time. It involved the docking of an Apollo Command/Service Module with the Soviet Soyuz 19. The unnumbered Apollo vehicle was a surplus from the terminated Apollo program and the last one to fly.