Facts on the Mir Space Station

Facts on the Mir Space Station
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Mir Space Station

The International Space Station, which is a joint venture of USA, Russia, ESA (European Space Agency), Japan, Canada, Brazil and Italy, is expected to be fully operational by the end of 2011. It will be the most sophisticated orbiting space laboratory. But the contributions which its predecessor, the Russian space station Mir made for its success is immense. Mir was not the first; it was Salyut 1, launched on April 19, 1971 which laid the foundation for the later space stations.

Nothing But Facts on the Mir Space Station

Mir in Space (1998)

Launch date: February 20, 1986

Date of completion: April 26, 1996

Mass of Mir: 130,000-140,000 kg

Orbit: 362 km or 225 miles above Earth

Velocity: 28,163 km/hr or 17,499 miles / hr

Modules of Mir: Mir core, Kvant, Kvant 2, Kristall, Spektr, Priroda and Docking modules

Last scientific module added: Priroda

Re-entry: March 23, 2001

First crew: Leonid Kizim and Vladimir Solovyov

The person who spent the longest time the station: Dr. Valeri Polyakov (from January 1994 to March 21, 1995)

Total number of cosmonauts/astronauts who stayed in Mir: 105

Cargo vehicles (man and materials): Soyuz TM and Progress M

Structure of Mir

Mir core:

  • Launch date: February 20, 1986

  • Size: 13 m long and 4 m in diameter (42.65 ft x 13.12 ft)

  • Weight: 20.9 tonnes (46,076 pounds)

  • Launching vehicle: Proton

    Interior of Mir’s core

Function: It was the first module launched and acted as the living quarters for the astronauts. It contained a control unit which monitored and commanded the operation of the station. It had six ports; one port each in the front and back for docking and four radial ports in the front for berthing large modules

Kvant 1:

  • Launched on: 31 March, 1987

  • Docked on: 9 April, 1987 (rear docking port)

  • Size: 5.8 m long and 4.15 m in diameter (19.02 ft x 13.61 ft)

  • Weight: 11 tonnes (24,250 pounds)**_



Function: It was used to study astronomical structures like active galaxies, neutron stars, other cosmic bodies and also for Bio-technological research.

Kvant 2:

  • Launched on: 26 November,1989

  • Docked on: 2 December,1989

  • Size: 12.2 m long and 4.35 m in diameter (40.02 ft x 14.27 ft)

  • Weight: 18.5 tonnes (40,785 pounds)_**



Function: It was home for the Extra Vehicular Activity (EVA) airlock, solar arrays and was also used for biological research.


  • Launched on: 31 May,1990

  • Docked on: 10 June, 1990

  • Size: 11.9 m long and 4.35 m in diameter ( 39.04 ft x 14.27 ft)

  • Weight: 19.6 tonnes (43,210 pounds)**_



Function: Contained solar panels and acted as a Buran docking port.


  • Launched on: 20 May, 1995

  • Docked on: 1 June, 1995

  • Size: 9.1m long and 4.35 m in diameter( 29.85 ft x 14.27 ft)

  • Weight: 19.6 tonnes (43,210 pounds)**_



Function: It was used for observing the Earth, mainly the natural resources and atmosphere.


  • Launched on: 23 April, 1996

  • Docked on: 26 April, 1996

  • Weight: 19.7 tonnes (43,431 pounds)**_



Function: Its main function was Earth remote sensing. It studied ecological problems, ozone concentration and temperature of seas and clouds.


Mir provided the scientific community with invaluable service before it crashed into the Pacific Ocean. Thus an era of Russian space orbiting laboratories, which began with the launching of Salyut 1, came to an end.