On 30 June 1908, the Tunguska meteorite fell near the Podkamennaya (Stony) Tunguska River in Evenkysky National District (60掳55' N. 100掳57' E. ), at 11 seconds past 0017 hours Mean Greenwich Time. Eyewitnesses reported a bolide flight from southeast to northwest, followed by a violent...
必应词典为您提供tunguskameteorite的释义,网络释义: 通古斯陨星;通古斯大爆炸;
long; theStony(Podkamennaya)Tunguska1550 km (960 miles) long; theUpper(Verkhnyaya)Tunguskawhich is the lower course of the Angara. The area was the scene in 1908 of a massive explosion believed to have been the result of the disintegration in the atmosphere of a small comet or meteorite...
tunguska 释义 通古斯卡河 大小写变形:Tunguska 实用场景例句 全部 The meteorite which devastatedTunguskais now estimated to have been about 50 metres across. 据猜测,毁灭通古斯的陨石的直径有近50英里. 互联网
meteorite crater planetary defense crater See all related content impact event,collisionof astronomical objects. Mostcollisionsinvolveasteroids,comets, ormeteoroidscolliding with larger objects, such asplanetsormoons. Most impact events involve relatively small objects, but others involve large objects ranging...
Grigorian SS (1998) The cometary nature of the Tunguska meteorite: on the predictive possibilities of mathematical models. In: Di Martino M, Farinella P, Longo G (eds) “Tunguska96.” Planet Space Sci, special issue 46(2–3):213–217 Google Scholar Hills JG, Goda MP (1993) The fragme...
It's noteworthy that no meteorite fragments have been recovered at Tunguska, which some have pointed to as evidence that it was a comet or something else. However, it's not too surprising. Of Chelyabinsk's 12,000 tons, less than 1 ton in total was ever found (less than 1% of 1%), ...
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In 1930, the British astronomer F.J.W. Whipple suggested that the Tunguska body was a small comet. A cometary meteorite, being composed primarily of ice and dust, could have been completely vaporized by the impact with the Earth's atmosphere, leaving no obvious traces. The comet hypothesis ...
Shaidurov believes that it was not the industrial revolution that caused the rise in temperature, but the catastrophe known as the Tunguska event, or Tungus meteorite. The Tunguska event was a large meteor or asteroid that entered Earth's atmosphere and exploded 8 km above the Tunguska River ...