Scientists around the world are sounding the alarm: the meteorite crashed in the Urals vividly recalled space threat. Experts believe to reflect such a risk, efforts are needed in all countries.
Armageddon in Uralsk
In February — rain in the Urals. It is somehow not comme il faut (comme il faut — as it should). So now that the Man Upstairs and decided to treat severe rainfall Chelyabinsk, then at least as a meteor rain.
Bright flash. A series of powerful explosions. This is what the celestial bodies seen on Earth. A he — Armageddon in Uralsk.
And this is how scientists describe an unexpected gift from the sky.
The meteorite was traveling — about 30 kilometers per second at a low trajectory. Experts from the Pulkovo Observatory estimated that it weighs several tens of tons. Most of the car burned up in the atmosphere. Floated to the surface of the Earth only fragments. The largest — up to one kilogram and about 20 centimeters in diameter.
The blast in Chelyabinsk povybivalo windows in homes. Suffered and local zinc plant. In one of the shops of the company even roof collapsed. All over the city for medical help with injuries of varying severity asked to five hundred people.
Experts say that to predict when and where it will not be a meteor rain. The most that can astrophysics — to make a rough prediction.
"Some meteor showers are repeated with a period of 33 years. And in this day there was a very interesting event over the Urals because of the Sikhote-Alin meteorite twice in 33 years, we get 2013. Thing — the middle of February," — said Senior Researcher Pulkovo Observatory Sergei Smirnov.
The trajectory of a meteorite
Had the good fortune to watch it is rare not only in Chelyabinsk. According to the eyewitnesses, the trajectory of a meteorite passes through Kurgan, Sverdlovsk and Tyumen regions. We saw something similar in Kazakhstan. It is already known, and the crash site of the largest meteorite — about a kilometer from the lake Chebarkul.
Interestingly, in the immediate vicinity — Ozersk, which produces components of nuclear weapons. A little further away — Snezhinsk with its large nuclear facilities.
Perhaps such a dangerous neighborhood and helped LDPR leader Vladimir Zhirinovsky see in the cloud plume American connection.
"As a primitive tribe. Which meteorites? Nothing never never falls. Cosmos — a universe where the laws. Incident, called the cosmic phenomenon, in fact, people do, the warmongers and provocateurs. Meteors are falling. This is not a meteor fall it tested a new weapon the Americans. Kerry wanted to warn on Monday sought Lavrov and Lavrov on a trip somewhere in Africa. wanted to warn that such provocation will be here, it can touch and Russia ", — explained his version of reality, and the story of the failed telephone conversation between U.S. Secretary of State John Kerry and Russian Foreign Minister Sergey Lavrov, the leader of the Liberal Democrats, Vladimir Zhirinovsky.
Version of the original. However, it has denied in Roskosmos. According to official data, the flying object, created a sensation in the Ural sky qualifies as a meteorite. In itself, this is not a rare phenomenon.
"What happened, on a global scale is called nonsense. Consider that nothing happened. Indeed, it's not a meteorite fragments wounded people. This celestial body flew at a speed of ten miles per second, with a highly supersonic speed. Supersonic aircraft for a shock wave . And there went a shock wave. This shock wave and broke all the windows, frame inversion "- said the deputy director of the Astronomical Institute of Moscow State University Sergei Lamzin.
Every year the Earth befalls the meteor storm total weight of about 22 tons. Individual meteorites weigh from 50 grams to 1 tonne.
Parameters of meteorites
In an average year the Earth receives 19,000 small bodies weighing up to a kilogram, about 4000 more than one kilogram of meteorites and about 830 "big man" of 10 pounds.
Reach the earth's surface, only 9% of all objects. Although they are well enough to create a stir.
April 16, 2010 a huge ball flew in the sky over the American Midwest. Panicked residents wake of three states — Vinkonsin, Kansas, Missouri.
November 23, 2008 in Canada's emergency services received thousands of calls from people who thought it was the end of the world. It was a blast, the largest meteorite over Canada. Explosive power equal to 100 tons of TNT. There were no casualties.
June 13, 2004 a meteorite fell on a house in Oakland resident of Canada. The hostess was in the kitchen when the stone with a crash through the roof and landed on the sofa in the next room. But then she sold the meteorite for 6000 dollars.
In 1920, the meteor rain fell on Namibia. Flew to the Earth is only one piece weighing 60 tons. Now this is a local attraction.
The largest such emergency in modern history was the fall of the Tunguska meteorite June 30, 1908. The total energy of the explosion — 50 megatons of TNT. In the area of the accident felled 2,000 square kilometers of forest. It is interesting that not a single fragment of the celestial body has not been found.
December 6, 1922 meteor rain observed in the current Volgograd region. Wreckage found only in 45 years on an area of 15 square kilometers. The largest fragment was weighing 284 pounds.
In the memory of many residents of Primorye was the Sikhote-Alin meteorite. He fell 2 February 1947 in the Ussuri taiga. His fall was accompanied by thunder, howling in the air for a long time there was a thick smoke trail of dark red color. The total weight of the collected debris on the ground was 27 tons.
And more recently, September 25, 2002 meteor rain passed around Bodaybo in Irkutsk region. The scientists compared the effects of the fall of the Vitim meteorite with a bomb capacity of 200 kilotons to 1 megaton of TNT. Damage zone is 100 square kilometers.
Ural meteorite immediately got into the top news around the world. Literally blew up Twitter. Thousands of people excitedly began to share experiences. In microblogs even appeared several pranksters under pseudonyms — meteorite Meteorite Stern and the like.
"So, someone woke Bruce Willis or Will Smith? Must save the Earth!" — Calls vernoogle.
"The meteorite fell in Russia in the international media? People do not worry, we're still alive!" — Optimistically states Julia.
"I think this meteorite" Mail of Russia "delivered. For it is 21.12. Should arrive" — guessed Nastya.
But the information in the comfort to those who may be jealous of the Urals, perforce take part in rehearsals Armageddon: Chelyabinsk meteorite for our planet is not the last.
Approaching Earth asteroids
Only for the next two decades will come closer to Earth about 6 large asteroids. The concept of "major" is quite relative. This 26-meter diameter object that we will continue to communicate through the year. And almost 500-meter-high block of what is coming upon us by 2028. And especially stands out asteroid nearly a kilometer. Expect robust fellow by 2027.
In the same list, and space object under the number 2012 DA14. With him, by the way, some experts link the explosions in the sky over the Urals. Closest approach of this heavenly body the size of a Sports Palace — February 15, 2013 at 23 hours 25 minutes Moscow time.
Mini Asteroid 2012 DA14
Diameter asteroid — 45 meters. He has already been compared with the Tunguska meteorite. Mass of the asteroid — 130 thousand tons. And he moves with great speed — 28,000 miles per hour. That is about 8 kilometers per second.
Trajectory and distance
According to the calculations, the minimum distance of a celestial body to Earth — less than 28,000 miles. The trajectory of the Indian Sumatra. Direction — from south to north.
Astronomers comfort: collisions with Earth impossible. Still a bit of fantasy: if 2012 DA14 crashed to the ground, by the force of his blow would be equal to an explosion of almost 2.5 million tons of TNT. The clash would be a thousand times stronger than the effect of the bomb dropped on Hiroshima. Approximation of the meteorite to the Earth can be viewed during the live broadcast on the BBC News.
At the same time, it is estimated that the asteroid 2012DA14 more times closer to Earth. His next visit is expected in 2046. So there is still time to dream about Armageddon.
Category: Natural anomalies