Soyuz TM-21

Mass: 7150 kg
Perigee: 201 km
Apogee: 247 km
Inclination: 51.65°
Period: 88.7 minutes

	Soyuz TM-21
	Mission insignia;
Mission statistics
Mission name	Soyuz TM-21
Spacecraft mass	7170 kg
Crew size	3 launched / 2 landed
Call sign	Урага́н (Uragan - Hurricane)
Launch date	March 14, 1995; 06:11:34 UTC; Gagarin's Start
Landing	September 11, 1995; 06:52:40 UTC; 108 km NE of Arkalyk; 50°40′N 68°15′E / 50.67°N 68.25°E
Mission duration	181 days 00 hours 41 minutes 06 seconds
Number of orbits	~2,940
Apogee	249.6 km
Perigee	200 km
Orbital period	88.7 minutes
Orbital inclination	51.65°
Crew photo
	From left to right: Norman Thagard, Vladimir Dezhurov, Gennady Strekalov
Related missions
Soyuz TM-20	Soyuz TM-22

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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, who returned to earth aboard Soyuz TM-21 on September 11, 1995.