Russian cosmonaut Valery Polyakov spent nearly 438 consecutive days aboard the Mir space station, and still holds the record for longest single human spaceflight. - Study24x7
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17 Apr 2019 12:44 PM study24x7 study24x7

Russian cosmonaut Valery Polyakov spent nearly 438 consecutive days aboard the Mir space station, and still holds the record for longest single human spaceflight.

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