High Quality Content by WIKIPEDIA articles! Col. Yuri Ivanovich Onufriyenko (Russian: Юрий Иванович Онуфриенко, Ukrainian: Юрій Іванович Онуфрієнко) (born 6 February 1961) is a Russian cosmonaut. He is a veteran of two extended spaceflights, aboard the space station Mir in 1996 and aboard the International Space Station in 2001-2002.