Klimuk attended the Leninski Komsomol Chernigov High Aviation School and entered the Soviet Air Force in 1964. The following year, he was selected to join the space programme.
From 1976 he became involved in the Intercosmos and made his third and final spaceflight on an Intercosmos flight with Polish cosmonaut Mirosław Hermaszewski on Soyuz 30 in 1978.[1][2]
He resigned from the cosmonaut team in 1978 to take up a position as the Assistant to the Chief of the Gagarin Cosmonaut Training Center. In 1991 he was promoted to Chief of that facility and remained in that post until retirement in 2003.
Medal "For Merit in Space Exploration" (12 April 2011) – for the great achievements in the field of research, development and use of outer space, many years of diligent work, public activities
Order "For Service to Motherland", 2nd class (Belarus, 15 July 2002) – for services to develop and strengthen scientific, technological and military cooperation
Order of Friendship of Peoples (Belarus) (16 July 2007) – for his significant contribution to strengthening the friendly relations and cooperation between Belarus and the Russian Federation
Medal "For the strengthening of friendship in Arms", 1st class (Czechoslovakia)
Medal "100th anniversary of the fall of the Ottoman yoke" (NRB)
Medal "from the grateful people of Afghanistan" (1988)
USSR State Prize (1978) – for his work on medical justification and implementation of complex methods and means of preventing the adverse effects of weightlessness on the human body, allowing for the possibility of prolonged crewed space flights