Vladimir DzhanibekovStatus: Retired 5/13/1942 – Nationality: Russian Type: Government First Flight: 1/10/1978 Last Flight: 6/6/1985Vladimir Aleksandrovich Dzhanibekov (Russian: Владимир Александрович Джанибеков, born 13 May 1942) is a former cosmonaut who made five flights. Dzhanibekov made five flights: Soyuz 27, Soyuz 39, Soyuz T-6, Soyuz T-12 and Soyuz T-13. In all he had spent 145 days, 15 hours and 56 minutes in space over these five missions. He had also performed two EVAs with a total time of 8 hours and 35 minutes. In 1985 he noted the effects of the tennis racket theorem, subsequently also called the Dzhanibekov effect, by showing that an object’s second principal axis is unstable while in free-fall rotation.LaunchesSoyuz-U | Soyuz 27Soyuz-U | Soyuz 39Soyuz-U | Soyuz T-6Soyuz-U2 | Soyuz T-12Soyuz-U2 | Soyuz T-13Russian Federal Space Agency (ROSCOSMOS)Type: Government Abbreviation: RFSA Administration: Administrator: Dmitry Rogozin Founded: 1992 Launchers: Soyuz Spacecraft: Soyuz Country: RUSThe Roscosmos State Corporation for Space Activities, commonly known as Roscosmos, is the governmental body responsible for the space science program of the Russian Federation and general aerospace research. Soyuz has many launch locations the Russian sites are Baikonur, Plesetsk and Vostochny however Ariane also purchases the vehicle and launches it from French Guiana.