Soyuz 20
Soyuz 20 was an unmanned spacecraft launched by the Soviet Union. It was a long-duration test of the Soyuz spacecraft that docked with the Salyut 4 space station. Soyuz 20 performed comprehensive checking of improved on-board systems of the spacecraft under various flight conditions. It also carried a biological payload. Living organisms were exposed to three months in space.
It was reentered on 16 February 1976.Crew
None.- Mass:
- Perigee:
- Apogee:
- Inclination: 51.6°
- Period: 89.1 minutes
