In 1994, Valeri Polyakov set the record for the longest continuous human spaceflight by spending 437 days aboard Russia's Mir space station, demonstrating that humans can survive extended periods in space with proper exercise and support systems.
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The astronaut who spent 437 days in spaceAdded:
In 1994, an astronaut began a mission that would last 437 days. For over a year, he lived aboard Russia's Mir space station. He exercised every day to stop his muscles from weakening.
When he finally returned to Earth, he held the longest space flight record ever achieved.
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