The American Apollo spacecraft as seen in Earth orbit from the Soviet Soyuz spacecraft. Note the special docking module attached to the Apollo capsule, specifically designed to allow the two spacecraft to join in orbit.
The American Apollo spacecraft as seen in Earth orbit from the Soviet Soyuz spacecraft. Note the special docking module attached to the Apollo capsule, specifically designed to allow the two spacecraft to join in orbit.Image Credit: U.S.S.R. Academy of Sciences