Who holds the record for the longest single stay in space?

Valeri Polyakov

Gennady Striekalov

Yang Liwei

Phạm Tuân

Valeri Vladimirovich Polyakov was a Russian cosmonaut. He stayed aboard the Mir space station for more than 14 months (437 days 18 hours) during a single mission.

scott1346 wikipedia → Valeri Polyakov

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