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Mir's third expansion module, dedicated to materials processing, Kristall was launched by the USSR and carried equipment for research on semiconductors and the purification of biologically active substances to the space station Mir. It also carried astrophysical, geophysical and technical experiments. Kristall was 11.9 m long, 4.35 m in diameter. Solar arrays spanned 36 m. Its main body was similar to Kvant 2, with a multiple docking port instead of an EVA airlock module. The docking system will host a future Buran visit. It increased Mir's mass to 83 metric tons and restabilized the station, thrown off kilter with the addition of Kvant 2.

Alternate Names

  • 20635

Facts in Brief

Launch Date: 1990-05-31
Launch Vehicle: Proton
Launch Site: Tyuratam (Baikonur Cosmodrome), U.S.S.R
Mass: 19640 kg

Funding Agency

  • Unknown (U.S.S.R)


  • Astronomy
  • Earth Science
  • Microgravity

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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