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Soyuz 20

Soyuz 20 was an uncrewed 7K-T spacecraft launched on 17 November 1975 for a long-duration systems and resource test docked to Salyut 4. It remained in orbit for 90 days, carried biological experiments in its descent module, and returned them to Earth on 16 February 1976.

Identity

Aliases
Uncrewed Soyuz 20Soyuz 7K-T long-duration test
Name
Soyuz 20
Status
retired

Details

Description
Soyuz 20 was an uncrewed 7K-T spacecraft launched on 17 November 1975 for a long-duration systems and resource test docked to Salyut 4. It remained in orbit for 90 days, carried biological experiments in its descent module, and returned them to Earth on 16 February 1976.
First Flight Date
1975-11-17
Manufacturer
Operator
Vehicle Family

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Creation Time
July 14, 2026 at 16:53:25 UTC
Updated Time
July 14, 2026 at 16:53:25 UTC

Other

Last Flight Date
1976-02-16
Search Name
Soyuz 20 Uncrewed Soyuz 20 Soyuz 7K-T long-duration test