Mir EO-4 (also called Principal Expedition 4) was the fourth long-duration expedition to the Soviet space station Mir. The expedition began in November 1988, when crew members Aleksandr Volkov and Sergei Krikalev arrived at the station via the spacecraft Soyuz TM-7.
See also: Mir, NProtect GameGuard, Mir Taqi Mir, Mir (lenses), WeMade Entertainment, and Mir Osman Ali Khan.