On this day: 1975 Apollo-Soyuz Project - the Orbital Partnership begins

Astronaut Donald Slayton, cosmonaut Aleksey Leonov and astronaut Thomas Stafford are photographed in the Soviet Soyuz Orbital Module during the Apollo-Soyuz test project docking in Earth orbit mission, July 1975.

Astronaut Donald Slayton, cosmonaut Aleksey Leonov and astronaut Thomas Stafford are photographed in the Soviet Soyuz Orbital Module during the Apollo-Soyuz test project docking in Earth orbit mission, July 1975.

AP
The first joint U.S.–Soviet space flight ended the Space Race

The Apollo–Soyuz Test Project was the first U.S.-Soviet cooperative mission in space. The project was launched on July 15, 1975. The mission involved docking an Apollo Command/Service Module on the Soviet Soyuz 19, as well as scientific investigations. The Apollo-Soyuz crew included three American astronauts: "Deke" Slayton, Tom Stafford, and Vance Brand - as well as two Russian cosmonauts: Aleksey Leonov and Valeriy Kubasov.

The Apollo-Soyuz project marked the end of the Space Race that began in 1957 with the Sputnik launch.

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