Space & the Universe
How many days did the longest single human spaceflight last, set by cosmonaut Valeri Polyakov aboard the Mir station?
Answer
437 days
Polyakov spent more than 14 months in orbit from 1994 to 1995, partly to prove humans could survive a trip to Mars. When he landed, he refused a stretcher and walked from the capsule to a nearby chair himself, declaring 'We can fly to Mars.'
Source: Guinness World Records
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