It turns out that a meteorite, which has more than 10 times the power of the atomic bomb that dropped to Hiroshima, has quietly crashed to the earth



If you hit a meteorite that is more than 10 times as powerful as the atomic bomb dropped in Hiroshima, you might imagine a big panic like the movie '

Armageddon '. However, in December 2018, it became clear that the meteorites of this scale had fallen silently to the earth without anyone being aware.

Meteor blast over Bering Sea was 10 times the size of Hiroshima | Science | The Guardian
https://www.theguardian.com/science/2019/mar/18/meteor-blast-over-bering-sea-was-10-times-size-of-hiroshima

A meteorite plunged into the sky over the Bering Sea located at the northernmost tip of the Pacific Ocean on December 18, 2018. Meturologist Simon Proud of Oxford University is publishing on Twitter the image of the inrush that the Japanese satellite Himawari captured.




In another Proud tweet, you can see a meteorite that emits orange light when you look closely, and a color photograph in which the shadow of the path of the meteorites is reflected in the clouds.




In the area surrounded by a red frame, you can see the appearance of a meteorite that enters the earth while emitting orange light.



It is a meteorite that looks like a point when viewed from a weather satellite located at an altitude of about 36,000 km, but the energy released when it exploded in the sky is estimated to be equivalent to about 173 kilotonnes of TNT powder , It is more than 10 times as powerful as the atomic bomb that struck. Scale of the explosion did severe damage crashed in Russia's Chelyabinsk State in 2013 meteorite on a scale second only to, was the second of size among which has been observed in the past 30 years.

What a 570 kg weight, the largest remnant of meteorites that fell in Russia, is found-GIGAZINE



A movie summary of the outrageous moment of a meteorites crashing into Russia-GIGAZINE



Unlike Charyabinsk's meteorites, which caused many damage and sightings because the explosion caused by the sky was close to the urban area, the meteorites in this time were not so much talked about at the time because they crashed into the Bering Sea with few people did. However, according to NASA 's planetary defense officer Lindley Johnson, the explosion caused by this meteorites is about to happen two to three times a century. The meteorites are several meters wide, and it is estimated that they entered the atmosphere at a speed of 72,000 miles per hour and exploded at an altitude of 16 miles (about 26 kilometers). You The energy released by this explosion is equivalent to about 40% of the energy released by Chalyabinsk's meteorites, said Kelly Fast, program manager for near-earth observation at NASA.

When it became clear that the explosion due to the meteorites was large, the researchers asked the airlines around the world for the witness testimony of the meteorites, but such information could not be obtained. The observation was successful only with a very low frequency observation team led by researcher Peter Brown of the University of Western Canada, which was accidentally observed by a sensor network to detect secret nuclear tests. Of.

Even though the explosion due to the meteorites over the Bering Seas was massive, nobody could detect the arrival of the meteors in advance. It means that there is a danger of colliding with the earth. NASA has set up a plan to identify 90% of asteroids larger than 140 meters in size near the earth by 2020, but it may take another 30 years to complete the plan. There is also a perspective.

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in Science, Posted by log1l_ks