Sergei Krikalev is a cosmonaut who was born on August 27, 1958, in Leningrad,
Krikalev became a cosmonaut in 1987. He has spent over 461 days in space
aboard 2 spaceflights.
In 1988, Krikalev flew aboard the Mir space station. He made a spacewalk during
his 6-month stay. In 1991, Krikalev flew a second time on Mir. During this stay, Krikalev made an
unprecedented 6 spacewalks where he did space construction.
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