On Oct. 6, 1992, the United States and Russia signed an agreement to share astronauts and cosmonauts. Known as the Agreement on Human Spaceflight Cooperation, this plan laid out the details for the joint Shuttle-Mir Program. Under this program, NASA's space shuttles would fly to Russia's Mir space station and carry Russian cosmonauts on board. Meanwhile, American astronauts started flying in the Russian Soyuz spacecraft, which still carries international crews to the International Space Station to this day.
