Soyuz | Soyuz 21
Launch Successful
L - -- : -- : -- : --
Instantaneous launch window.
Launch Window
July 6, 1976, 12:08 p.m. - July 6, 1976, 12:08 p.m.
Instantaneous launch window.
July 6, 1976, 12:08 p.m. - July 6, 1976, 12:08 p.m.
Soyuz 21 was the first crewed mission to the Salyut 5 military space station. The mission began on July 6, 1976, 12:08:45 UTC, launching Commander Boris Volynov and Flight Engineer Vitaly Zholobov into orbit. Spacecraft docked with the station on July 7. During their stay on the station, crew conducted scientific experiments, inculding the first use of Kristall furnace for crystal growth, solar observations and experiments of military nature. The mission was expected to last for 60 days, but emergincies occured on the 42nd day, which included shutdown of several onboard systems, oxygen regeneration system among those. Crew restored functionality of the spaceship, but both Volynov and Zholobov's health was deteriorated, and mission had to end early. The mission concluded after 49 days with a rough landing back on Earth on August 24, 1976, 18:32:17 UTC.
Soyuz 21 was a Soyuz spacecraft which launched on 6 July 1976 12:08 UTC. It transported two cosmonauts on the first flight to Salyut. The crew was Boris Volynov and Vitaly Zholobov.
Soyuz Details
Date of
Birth: Dec. 18, 1934
Age: 91
Date of
Birth: June 18, 1937
Age: 88
The Roscosmos State Corporation for Space Activities, commonly known as Roscosmos, is the governmental body responsible for the space science program of the Russian Federation and general aerospace research. Soyuz has many launch locations the Russian sites are Baikonur, Plesetsk and Vostochny however Ariane also purchases the vehicle and launches it from French Guiana.
INFO WIKIA batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A pair of Chinese satellites reported to be for "Earth observation technological testing and validation" purposes. Actual usage not known.
A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…
Firefly Alpha's Flight 7 is a test flight and return-To-Flight for the launch vehicle after its April 2025 launch failure. It will test and validate …
EchoStar 25 is a direct broadcast satellite, built on the proven Maxar 1300 series platform, which will deliver content across North America. It will…
A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Note: Payload and customer identities were not publicly announced. 4th of the BlackSky Gen-3 high resolution Earth-imaging satellites.
Third flight of the KAIROS launch vehicle. 5 satellites will be on board: * TATARA-1R * SC-Sat1a * HErO * AETS-1 * Nutsat-3 (TASA/Taiwan)
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.