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Astronomy and Space

Exploration

Who has spent the most time in space?

The cosmonaut, Sergei Krikalev (1958–), has accumulated the most spaceflight time—803 days, 9 hours and 39 minutes in six flights. The cosmonaut, Valeri Polyakov (1942–), has spent 438 consecutive days in space from January 8, 1994 to March 22, 1995.

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