Aleksei Gubarev Status: Deceased 3/29/1931 – 2/21/2015 Nationality: Russian Type: Government Agency: Russian Federal Space Agency (ROSCOSMOS) Aleksei Aleksandrovich Gubarev (Russian: Алексе́й Алекса́ндрович Гу́барев; 29 March 1931 – 21 February 2015) was a Soviet cosmonaut who flew on two space flights: Soyuz 17 and Soyuz 28.