Milestone: outliving Valeri Kubasov.
Valery Nikolaevich Kubasov was a Soviet and Russian cosmonaut who flew on two missions in the Soyuz programme as a flight engineer: Soyuz 6 and Soyuz 19, and commanded Soyuz 36 in the Intercosmos programme.
Facts: Wikidata and Wikipedia. Ages are calculated, not estimated.
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