🌐EnglishEnglishEspañolItalianoPolskiРусскийفارسی日本語EntityQ1275965· pop 14· linked from 51 articlesBulgaria 1300Bulgaria's first artificial satelliteConnectionsBulgariaCountrySoviet UnionConceptSofiaCategories1981 in Bulgaria1981 in the Soviet UnionBulgaria–Soviet Union relationsDerelict satellites orbiting EarthFirst artificial satellites of a countryInterkosmos programSatellites of BulgariaSatellites orbiting EarthSpacecraft launched in 1981