DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY
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Soyuz 29 crew. Soviet cosmonauts Vladimir Kovalyonok (born 1942) and Aleksandr Ivanchenkov (born 1940) prior to their Soyuz 20 mission. Soyuz 29 was a 1978 manned Soviet space mission that carried Kovalyonok and Ivanchenkov to the Salyut 6 space station. It was the fifth mission, the fourth successful docking, and the second long-duration crew for the orbiting station. The was mission launched on 15th June 1978 and returned to Earth on 3rd September 1978, establishing a new space-endurance record of 139 days.
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