Soyuz 20, an uncrewed Soyuz 7K-T test flight to Salyut 4 carrying biological specimens; it docked for about three months to prove long-duration spacecraft systems before returning.
- Outcome
- Success
- Payload to orbit
- 6.8 T
- Flight
- 22nd
- of 714 Soyuz U flights
- Date and time
- 17 November 1975, 14:36 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 1/5, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Unknown
- International designator
- 1975-106
- Launches in 1975
- 111th of 132
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
View satellites in Space Atlas