In Case You Missed It Russia Clobbered By Meteor .... Again
The Russian Academy of Sciences, which investigates the unexpected "meteor attack" in the Urals, has shared preliminary results with the general public.
"According to our estimates, the body was a few meters large, it weighed about ten tons, and its power was a few kilotons. The celestial body entered the atmosphere at the speed of 15-20 kilometers per second, collapsed at an altitude of 30-50 kilometers, and the movement of fragments at high speed caused powerful glow and a strong shock wave. The bulk of the material of the falling body evaporated, the remaining pieces slowed down and could fall to the ground as meteorites," ITAR-TASS quoted the press service of the RAS.
The flight of the meteorite in the sky over the Chelyabinsk region was accompanied with three explosions of varying power, the chairman of the regional branch of the Russian Geographical Society, Sergey Zakharov said. "From what I saw, the balls of fire were flying from the south-east to north-west. There were three explosions that were preceded with a bright flash of light, with a temperature of approximately 2,500 degrees Centigrade. The first explosion was the strongest," the scientist said.
According to most recent information from the Interior Ministry, as many as 1,200 people suffered from the meteor attack. The local authorities have evaluated the damage at one billion rubles.
A report from the Russian Geographical Society said it was a bolide explosion, rather than a meteor shower. "A bolide is a large celestial body, actually a large meteor, that exploded when entering the lower, denser layers of the atmosphere, and showered the ground with debris, - said Zakharov. - A meteor shower is practically safe - it is a flow of crushed rocks falling from space. Repeat: we had a fireball, or a bolide explosion."
"A Bright white flash of light was so intense that it fully illuminated the huge yard of the apartment building where I live, - the scientist shared his personal impressions. - Its brightness was increasing incrementally - the flash lasted for about five seconds in total. Everything was happening in absolute silence. The sound that is, the shock wave, came six minutes later. Immediately after the explosion dogs started whining, flocks of pigeons flew up into the sky, car alarms went on. Nobody could understand what had happened ....."
According to experts, the explosion occurred at the height of about 60-70 km. The estimated power of the blast is 1 - 10 kilotons. "But according to measurements from the other side of the city, the height could be 30 km. In this case, the power of the explosion was from 0.1 to 1 kiloton. The epicenter of the explosion was to the south of Chelyabinsk," said the scientist.
Meanwhile, Interior Ministry officials said that two fragments of the meteorite were found in the Chebarkul district of the Chelyabinsk region. Another one was found in Zlatoust.
Official representative of the Central Military District, Yaroslav Roshchupkin, said that the military had found the location of the meteorite fall. The diameter of the crater is six meters.
EMERCOM officials are careful in their comments about the recovered fragments of the space body. "The fragments range from 5 mm to 1 cm. We do not have any precise information yet," officials told Interfax.
The Russian president is concerned about the situation with the fall of the meteorite, ITAR-TASS said. He held a meeting with the head of the Russian Emergencies Ministry, in which Minister Vladimir Puchkov requested Moscow specialists should be sent to the Chelyabinsk region.
The fall of the meteorite in the Chelyabinsk region affected, according to latest reports, up to 600 local residents. Dozens were hospitalized. "As many as 571 people have asked for help, 34 were hospitalized," officials said. Two victims remain in a serious condition. Meanwhile, according to the governor of the Chelyabinsk region, 725 people sought medical treatment, including 159 children.
Many people are still shocked about what happened. An employee of one of the branches of The Post of Russia was hospitalized with a heart attack. The blast frightened many children, who were at school at the time of the incident.
More than 100,000 square meters of windows have been smashed in the Chelyabinsk region as a result of the explosion. A total of almost 3,000 apartment buildings have been damaged. To repair the shattered windows, the local authorities want to resort to the help of a local glass factory. However, the number of workers at the plant is not enough to help people quickly, so the authorities seek the assistance of volunteers.
Windows were shatters in 34 medical institutions, 361 child care centers, schools and kindergartens.
As of 8:00 p.m. local time, February 16, the number of victims increased to 985 people. Forty-three people were hospitalized. Two remain in a critical condition. No casualties have been reported.
Which sounds a lot like ...
The Tunguska event was an enormously powerful explosion that occurred near (and later struck) the Podkamennaya Tunguska River in what is now Krasnoyarsk Krai, Russia, at about 7:14 a.m. KRAT (00:14 UT) on June 30 [O.S. June 17], 1908.The explosion, having the epicenter (60.886°N, 101.894°E), is believed to have been caused by the air burst of a large meteoroid or comet fragment at an altitude of 5–10 kilometers (3–6 mi) above the Earth's surface. Different studies have yielded widely varying estimates of the object's size, on the order of 100 meters (330 ft), It is the largest impact event on or near Earth in recorded history. The number of scholarly publications on the problem of the Tunguska explosion since 1908 may be estimated at about 1,000 (mainly in Russian). Many scientists have participated in Tunguska studies, the best-known of them being Leonid Kulik, Yevgeny Krinov, Kirill Florensky, Nikolai Vladimirovich Vasiliev, and Wilhelm Fast.
At around 7:17 a.m. local time, Evenks natives and Russian settlers in the hills northwest of Lake Baikal observed a column of bluish light, nearly as bright as the Sun, moving across the sky. About 10 minutes later, there was a flash and a sound similar to artillery fire. Eyewitnesses closer to the explosion reported the sound source moving east to north. The sounds were accompanied by a shock wave that knocked people off their feet and broke windows hundreds of kilometers away. The majority of witnesses reported only the sounds and the tremors, not the sighting of the explosion. Eyewitness accounts differ as to the sequence of events and their overall duration.
The explosion registered on seismic stations across Eurasia. In some places the shock wave would have been equivalent to an earthquake of 5.0 on the Richter scale. It also produced fluctuations in atmospheric pressure strong enough to be detected in Great Britain. Over the next few days, night skies in Asia and Europe were aglow; it has been theorized that this was due to light passing through high-altitude ice particles formed at extremely low temperatures, a phenomenon that occurred again when the Space Shuttle re-entered the Earth's atmosphere. In the United States, the Smithsonian Astrophysical Observatory and the Mount Wilson Observatory observed a decrease in atmospheric transparency that lasted for several months, from suspended dust. - Wiki