Soyuz TM-4 was the fourth mission to Mir space station. The mission began on December 21, 1987, 11:18:03 UTC, launching Commander Vladimir Titov, Flight Engineer Musa Manarov and Research Cosmonaut Anatoli Levchenko into orbit. They docked with Mir two days later. During their stay there, crew carried out over 2000 various experiments, performed two EVAs. They were visited by Soyuz TM-5 and Soyuz TM-6 crews. Vladimir Levchenko spent only a week on the station, while other two members of the crew stayed for a long duration mission. They returned on a Soyuz TM-6 spacecraft, landing safely back on Earth on December 21, 1988, 09:57:00 UTC.