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Tunguska |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.25 sec. |
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Tunguska (t n-g s`kə), name of three eastern tributaries of the Yenisei Yenisei (yĕnĭsā`, Rus. yĕnyĭsyā`), chief river of Siberia, c.2,500 mi (4,020 km) long, central Siberian Russia...... Click the link for more information. River, Siberian Russia. The rivers cut across the swampy forests of E central Siberia, draining the Tunguska Basin Tunguska Event, a huge explosion that flattened hundreds of square miles of forest. It may have resulted from the catastrophic breakup of a stony asteroid about 100 ft (30 m) in diameter 5 mi (8 km) above the earth's surface. ..... Click the link for more information. . Furthest north is the Lower Tunguska, Rus. Nizhnyaya Tunguska (nyēzh`nyīŭ t Stony Tunguska, Rus. Podkamennaya Tunguska (pŭtkä`myĭnīŭ t Upper Tunguska, Rus. Verkhnyaya Tunguska (vĕrk`nyəyə t How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Large rivers (the Angara, the Lena, the Nizhnyaya Tunguska, the Selenga) freeze in October-November and open in May-early June. To penetrate Earth's atmosphere, an asteroid would need to measure about 50 meters in diameter--roughly the size of one that exploded over the Tunguska River region in Siberia, Russia, in 1908. We have evidence of this happening at the Tunguska site in Siberia. |
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