"Sergey Aleksandrovich Volkov (Russian: Сергей Александрович Волков; born 1 April 1973) is a retired Russian cosmonaut and engineer. He was a member of three missions to the International Space Station, spending more than a year in total in space. During his missions he did four spacewalks lasting more than 23 hours in total.
Volkov retired from the Cosmonaut group in February 2017." - (en.wikipedia.org 17.12.2023)
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