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Season 3 Episode 7: Siberian Fireball

The Tunguska event of 1908 was eerily similar to the Trinity nuclear test in 1945. How could a nuclear-like blast have occurred prior to the atomic age? Was a comet or asteroid the cause? Or was extraterrestrial technology responsible?

Genre:

Documentary, Mystery

Seasons:

7

Episodes:

152

Actor:

Leonard Nimoy

Quality:

HD

Status:

Ended

First Air:

1977

IMDb:

8.1