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Petrozavodsk and the Jellyfish

added01 September 2026

Early on 20 September 1977 an enormous glowing object appeared over Petrozavodsk which witnesses described as a jellyfish: it hung for several minutes, sending thin beams downward. In several buildings the windows were left with holes through them, their edges melted. The phenomenon was seen from Finland to Leningrad, and the USSR Academy of Sciences set up a group to study it. The cause is established: at 4:01 a rocket carrying the Kosmos-955 satellite lifted from Plesetsk, and the jellyfish was its exhaust in the upper atmosphere lit by a sun still below the horizon. The holes in the windows were never explained.

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