The Tunguska event was an enormously powerful explosion that occurred near the Podkamennaya Tunguska River in Russia on June 30, 1908. The most mysterious aspect of this explosion is that it left no crater and scientists have long argued over what could have caused it. The generally accepted theory is that the explosion was the result of a meteorite or comet exploding in the Earth's atmosphere.
Last Thursday, Andrei Zlobin from the Russian Academy of Sciences made the extraordinary announcement that he has found three rocks from the Tunguska region with the telltale characteristics of meteorites. The only strange thing is that Zlobin found the fragments 25 years ago.
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