EntityQ1392129· pop 15· linked from 245 articlesKosmos 638Sign in to saveUSSR spacecraftConnectionsApollo–SoyuzEntityZond 8EntitySoyuz 7K-LOKEntitySkynetEntityAndrogynous Peripheral Attach SystemEntityRussianEntitySoviet UnionConceptNASAConceptInternational Standard Book NumberEntityBaikonur CosmodromeEntityorbital periodEntityapsisEntitySoyuzEntityorbital inclinationEntitySoyuz programmeEntitySoyuz 11EntitySoyuz 1EntityN1Entitygeocentric orbitEntitySoyuzEntityCategories1974 in the Soviet UnionApollo–Soyuz Test ProjectKosmos satellitesSoyuz uncrewed test flightsSpacecraft launched in 1974