The Soviet Union launches the Soyuz TM-6 mission to the Mir space station, with cosmonauts Vladimir Lyakhov, Valeri Polyakov and Abdul Ahad Mohmand aboard. Lyakhov and Mohmand remain aboard Mir for only a week, participating in experiments involving both crews, but Polyakov, a medical doctor, remains on Mir to monitor the Expedition 3 crew in the final months of their unprecedented one-year stay in orbit. This crew exchanges spacecraft with the station crew, returning home in the Soyuz TM-5 vehicle after a week on Mir, but their return is plagued by problems both technical and otherwise.
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