Soyuz TM-8Cosmonauts Alexander Viktorenko and Aleksandr Serebrov lift off aboard the Soviet spacecraft Soyuz TM-8, bound for the presently unoccupied space station Mir (which had been left without a crew since April 1989). At a distance of only 4 meters to Mir’s docking hatch, Soyuz TM-8 suffers a breakdown of its automated docking system, and Viktorenko has no choice but to back the Soyuz away and carefully dock under manual control. The two-man crew remains aboard Mir for 166 days, returning to Earth in February 1990.