Soviet Union
LocationCountrySoviet Union
LocationCountryThe USSR (1922–1991), the Cold War superpower whose air-defense sightings, secret Setka UFO study and partly opened military and KGB files form a major branch of UAP history.
The USSR (1922–1991), the Cold War superpower whose air-defense sightings, secret Setka UFO study and partly opened military and KGB files form a major branch of UAP history.
The Soviet Union, formally the Union of Soviet Socialist Republics, was a one-party communist state created by treaty on 30 December 1922 and dissolved on 26 December 1991, when its fifteen union republics became independent states. Governed from Moscow, it was the largest country in the world, spanning about 22.4 million square kilometres, with 286.7 million people at its 1989 census. Russia inherited most of its military, scientific and archival institutions.
Throughout the Cold War the USSR was both a prime suspect behind Western UFO reports and a closed territory that Western intelligence strained to watch. CIA files released by the Department of War in 2026 include a 1955 memorandum on objects reported by Senator Richard Russell's party near Baku, which analyst Herbert Scoville Jr. judged most likely steeply climbing aircraft or missiles. At home, missile ranges, the Plesetsk launch site and a vast air-defense network produced a steady flow of unexplained sightings.
Domestic research followed the glowing "jellyfish" seen over Petrozavodsk in Karelia before dawn on 20 September 1977, which Western analyst James Oberg tied to a rocket launch from Plesetsk. From 1978 to 1990 the Academy of Sciences and the Ministry of Defence ran a secret study known as Setka, or "network," led by astrophysicist Yuli Platov; according to The Moscow Times, it logged about 3,000 reports, attributed roughly 90 percent to rocket launches, balloons and other human activity, and found no substantive evidence of alien visitation. In October 1991 a KGB deputy chairman sent cosmonaut Pavel Popovich 124 pages of mostly military reports, including sightings at Kapustin Yar in July 1989, which Komsomolskaya Pravda published in 2003.
Journalist George Knapp, who obtained Ministry of Defence files in Moscow in 1993, told the House Oversight Committee in September 2025 that the military program was followed by one called Thread III, and repeated Colonel Boris Sokolov's account of an October 1982 incident in which, Knapp said, launch displays at a Ukrainian missile base activated on their own while a UFO hovered overhead. Soviet material resurfaced repeatedly in 2026. Ross Coulthart's NewsNation reporting revisited Object M, metal found under a garden in Tallinn's Merivälja suburb in 1969 that, the program said, Soviet teams excavated on and off until perestroika, and relatives of engineer Valerijs Černohajev promoted a 119-page archive of propulsion notes attributed to him, acknowledging gaps in its provenance. Because Soviet archives opened only partially after 1991, much of this history still reaches the public through translated files and those who obtained them.