Date of Birth: 
Place of Birth: Saint Petersburg
About Sergei Krikalev
- Sergei Konstantinovich Krikalev (Russian: ?????´? ?????????????? ????????, also transliterated as Sergei Krikalyov; born August 27, 1958) is a Russian cosmonaut and mechanical engineer.
- As a prominent rocket scientist, he is a veteran of six space flights and ranks third to Gennady Padalka and Yuri Malenchenko for the amount of time in space: a total of 803 days, 9 hours, and 39 minutes.
- He retired from spaceflight in 2007 and is currently working as vice president of Space Corporation Energia.
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