The astronauts and cosmonauts sit atop mock-ups at NASA's Johnson Space Center in Houston. At left, the three Americans (left to right, Slayton, Brand and Stafford) are seated on a mock-up of the docking module designed to link the Apollo and Soyuz spacecraft. The two Soviets (Kubasov, left, and Leonov) are atop a mock-up of a Soyuz spacecraft.
The astronauts and cosmonauts sit atop mock-ups at NASA’s Johnson Space Center in Houston. At left, the three Americans (left to right, Slayton, Brand and Stafford) are seated on a mock-up of the docking module designed to link the Apollo and Soyuz spacecraft. The two Soviets (Kubasov, left, and Leonov) are atop a mock-up of a Soyuz spacecraft orbital module.Image Credit: NASA