At least 15-20 days, but its only flight lasted only 206 minutes.
The Buran programme was started by the Soviet Union as a response to the United States Space Shuttle programme. The project was the largest and the most expensive in the history of Soviet space exploration. Development work included sending BOR-5 test vehicles on multiple sub-orbital test flights, and atmospheric flights of the OK-GLI aerodynamic prototype. Buran completed one uncrewed orbital spaceflight in 1988, after which it was recovered successfully. Although the Buran class was similar in appearance to NASA's Space Shuttle orbiter, and could similarly operate as a re-entry spaceplane, its internal and functional design was distinct. For example, the main engines during launch were on the Energia rocket and were not taken into orbit by the spacecraft. Smaller rocket engines on the craft's body provided propulsion in orbit and de-orbital burns, similar to the Space Shuttle's OMS pods.
The Buran was a Soviet and later Russian reusable spacecraft that began development in 1974 at the Central Aerohydrodynamic Institute in Moscow and was formally suspended in 1993.
14th test flight of the two-stage Starship launch vehicle. 3rd flight of Starship V3 and the first Starship flight to deploy satellites (a group of S…
A classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield satellite bu…
Synthetic aperture radar satellite for Japanese Earth imaging company Synspective.
3 Chinese reconnaissance satellites of unknown purposes, officially reported as for "Electromagnetic environment probing".
A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…
Share-ride of 9 commercial Earth observation and technology demonstration satellites to SSO, details TBD.
A batch of 27 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
4 X-band synthetic-aperture radar Earth observation satellites for the Chinese Earth observation satellite company PIESAT.
Synthetic aperture radar satellite for Japanese Earth imaging company Synspective.
Note: Satellite serial number and Cosmos designation not confirmed. Glonass-K are the third generation of satellite design for GLONASS satellite n…