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|Mission duration||181 days, 41 minutes, 6 seconds|
|Launch mass||7,170 kilograms (15,810 lb)|
|Crew size||3 up
|Callsign||Урага́н (Uragan - Hurricane)|
|Start of mission|
|Launch date||March 14, 1995, 06:11:34UTC|
|End of mission|
|Landing date||September 11, 1995, 06:52:40UTC|
|Perigee||200 kilometers (120 mi)|
|Apogee||249.6 kilometers (155.1 mi)|
|Docking with Mir|
From left to right: Norman Thagard, Vladimir Dezhurov, Gennady Strekalov
Soyuz TM-21 was Soyuz mission, a human spaceflight mission transporting personnel to the Russian space station Mir. Part of the US/Russian Shuttle-Mir Program, the mission launched from Baikonur Cosmodrome, atop a Soyuz-U2 carrier rocket, at 06:11:34 UTC on March 14, 1995. It is of note because its launch marked the presence, for the first time ever, of thirteen humans in space simultaneously - three aboard the Soyuz, three aboard Mir and seven aboard Space Shuttle Endeavour, flying STS-67.
The spacecraft carried expedition EO-18 to the space station, including the first American astronaut to launch on a Soyuz spacecraft and board Mir, Norman Thagard, for the American Thagard Increment aboard the station, the first Increment of the Shuttle-Mir program. The three crew members it launched were relieved by Space Shuttle Atlantis during STS-71, when they were replaced by expedition EO-19. The crew returned to earth aboard Soyuz TM-21 on September 11, 1995.
|Position||Launching crew||Landing crew|
|Commander|| Vladimir Dezhurov
| Anatoly Solovyev
|Flight Engineer|| Gennady Strekalov
| Nikolai Budarin
|Research Cosmonaut|| Norman Thagard
- Mass: 7150 kg
- Perigee: 201 km
- Apogee: 247 km
- Inclination: 51.65°
- Period: 88.7 minutes
- First Mir docking: March 16, 1995, 07:45:26 UTC
- First Mir undocking: July 4, 1995, 10:55 UTC
- Second Mir docking: July 4, 1995, 11:39 UTC
- Second Mir undocking: September 11, 1995, 03:30:44 UTC
- "Spaceflight mission report: Soyuz TM-21". Spacefacts.de. February 19, 2007. Retrieved 2007-04-09.
- "Soyuz TM-21". Encyclopaedia Astronautica. March 12, 2001. Retrieved 2007-04-09.