Apollo-SoyuzThe last Apollo spacecraft to fly makes history by docking with a Soviet-launched Soyuz spacecraft in orbit, allowing the crews to visit each other and conduct joint scientific experiments. The first docking of the Apollo-Soyuz Test Project is hailed as a major development in international relations as well as spaceflight, though it will be 20 years before the feat is repeated. Plans for a second Apollo-Soyuz flight the following year are scuttled due to budget concerns, and the need to commence work on converting NASA’s launch facilities for future shuttle launches rather than further Apollo launches.