Sergei Konstantinovich Krikalev 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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some trivia for today
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