Soyuz TM-8 was a Soviet Soyuz TM spacecraft flown to Mir in 1989-1990. It launched Aleksandr Viktorenko and Aleksandr Serebrov from Baikonur on September 5, 1989, docked with Mir two days later, and remained at the station through Mir EO-5. The spacecraft returned the same crew to Earth on February 19, 1990 after a 166-day expedition that included the arrival of the Kvant-2 module.