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The scientist explained the nature of the Tunguska cosmic body

Scientist Yazev: The Tunguska space body cannot be called a meteorite
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Photo: RIA Novosti/Vitaly Bezrukikh
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According to the main scientific hypothesis, the Tunguska space body was not a meteorite, but a part of the comet's nucleus. This was announced on June 30 by Doctor of Physico-Mathematical Sciences, Professor Sergey Yazev.

"According to the main hypothesis of scientists, the Tunguska space body was not a meteorite, a fragment of the comet's icy core approached the Earth and explosively evaporated in its atmosphere," Yazev told RIA Novosti.

According to him, the term "meteorite" is applied only to celestial bodies that have reached the Earth's surface. While an object is in space, it is called an asteroid if it consists of stone and metal, whereas the basis of comets is ice.

Yazev noted that the search for fragments of the Tunguska space body had not yielded results. According to him, if it really was a fragment of the comet's nucleus, then the ice mass, upon entering the atmosphere at a speed of at least 20 km/ sec, heated up to several thousand degrees and completely turned into steam at an altitude of 5-10 km above the Earth.

Astronomy magazine reported that a meteorite impact on Earth in the distant past could have caused a "golden shower" on the territory of modern Western Australia. Researchers have discovered a previously unknown meteorite crater with a diameter of 4 km in the Eastern Goldfields region. The researchers claim that during the collision, when fragments of shock rocks and glass were thrown into the sky, gold particles also fell back to the surface as part of the forming breccia deposits.

Переведено сервисом «Яндекс Переводчик»

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