EntityQ1313442· pop 14· linked from 58 articlesElektronSign in to savesatelliteConnectionsapsisEntityRussianEntitySoviet UnionConcepthydrogenEntityoxygenEntitycarbonEntityelectronEntityInternational Standard Book NumberEntityequatorEntityUTCEntityartificial satelliteEntityatmosphere of EarthEntityEarth scienceEntityionEntitysemiconductorEntitymicrophoneEntitycosmic radiationEntitySergei KorolevEntityionosphereEntityorbital periodEntityCategoriesGeospace monitoring satellitesSatellite seriesSatellites of the Soviet UnionTwin satellites