Georgy Grechko Status: Deceased 5/25/1931 – 4/8/2017 Nationality: Russian Type: Government Agency: Russian Federal Space Agency (ROSCOSMOS) Georgy Mikhaylovich Grechko (Russian: Георгий Михайлович Гречко; 25 May 1931 – 8 April 2017) was a Soviet cosmonaut who flew on several space flights including Soyuz 17, Soyuz 26, and Soyuz T-14.