 Complete the following phrase:  The origins of the ShuttleMir program can be traced back to the 1975 ApolloSoyuz Test Project, that resulted in a joint USSoviet mission during the détente period of the Cold War and the docking between a US Apollo spacecraft and a Soviet Soyuz spacecraft. This was followed by the talks between NASA and Intercosmos in the 1970s about a ShuttleSalyut program to fly Space Shuttle missions to a Salyut space station, with later talks in the 1980s even considering flights of the future Soviet shuttles from the 