{"type":"events","slug":"1977-petrozavodsk-phenomenon","title":"Petrozavodsk Phenomenon","url":"https://disclosdex.com/events/1977-petrozavodsk-phenomenon","description":"A radiant jellyfish-shaped object hovered over Petrozavodsk, USSR in 1977, sparking international media coverage","date":"1977-09-20T00:00:00.000Z","tags":["Sighting"],"updated":"2025-06-13T13:26:43.000Z","disclosureRating":6,"status":"resolved","lat":61.789,"lng":34.346,"connectionCount":0,"content":{"markdown":"## Dawn display\n\nBefore sunrise, witnesses across the city observed a luminous object emitting ray-like beams downward. The display lasted several minutes and was photographed by local news outlets.\n\n## Scientific speculation\n\nSoviet authorities first suspected a rocket launch from Plesetsk but later denied any connection. The case remains one of the best-documented sightings from the Cold War era. [^1][^2][^3][^4][^5]\n\n[^1]: [Chernouss et al.: Optical Phenomena due to Rocket Exhaust Products in the Atmosphere](https://archive.geophysica.fi/pdf/geophysica_2012_48_1-2_065_chernouss.pdf)\n[^2]: [James E. Oberg: \"The Great Soviet UFO Coverup\"](https://www.debunker.com/texts/soviet_coverup.html)\n[^3]: [Chernouss et al.: Optical Phenomena due to Rocket Exhaust Products in the Atmosphere](https://archive.geophysica.fi/pdf/geophysica_2012_48_1-2_065_chernouss.pdf)\n[^4]: [James E. Oberg: \"The Great Soviet UFO Coverup\"](https://www.debunker.com/texts/soviet_coverup.html)\n[^5]: [Chernouss et al.: Optical Phenomena due to Rocket Exhaust Products in the Atmosphere](https://archive.geophysica.fi/pdf/geophysica_2012_48_1-2_065_chernouss.pdf)","readingTime":"1 min read"},"relatedRecords":[],"citation":{"canonicalUrl":"https://disclosdex.com/events/1977-petrozavodsk-phenomenon","title":"Petrozavodsk Phenomenon","publisher":"Disclosdex","retrievedFrom":"https://disclosdex.com/api/v1/events/1977-petrozavodsk-phenomenon","license":"CC-BY-4.0"},"witnesses":["A radiant jellyfish-shaped object hovered over Petrozavodsk"]}