Why Explosion Occurs At Meteor Fall?

California - On Friday morning, residents of Chelyabinsk Russia were struck by a giant fireball that shot out of the sky. The explosion, caused by a small meteorite entering the atmosphere, hundreds of people were reported injured and bath "puff" that makes glass-window glass is broken.

Why meteors explode? Asteroids are chunks of rock only, so what makes them so explosive? Only one answer to this question: speed.

Kinetic energy, or energy of motion, of the asteroid that 'speeding' down to Earth so big. Russian Meteor enters the atmosphere at 64,374 miles per hour, said Bill Cooke, head of NASA's Meteor Unit Marshall Space Flight Center in Huntsville, Alabama said in a press conference.

"It's faster than chunks of asteroid or comet which caused the Tunguska event in 1908 is estimated to have entered the atmosphere at a speed of about 53,913 km / h," he said. Events more than a century ago is causing severe damage in Siberia.


Large meteor explosion does not happen every day, especially in populated areas, but it can not be avoided. Meteors size entering the atmosphere every few years, said Mark Boslough, a physicist at Sandia National Laboratories in New Mexico are studying the meteor impact.


The shock waves that cause the glass shattering as it did in Russia, he said, is the interaction of asteroids with the atmosphere that makes it hot. "It's like TNT with more energy," said Boslough.

Rusian Meteorite fragments Valuable Sell High

WASHINGTON - Flakes meteorite that may be spread around the city of Chelyabinsk, Russia, the rest of the explosion of a meteor in the city on Friday (15/02/2013) yesterday, estimated to be worth selling high. Collector space objects began to glance to chase.
"Flakes of small meteorites may only have a value of a few dollars, but if the size could be priced at $ 100,000 or even more," said Joseph Gutheinz, a meteorite specialist expert and a former special agent of the U.S. National Aeronautics and Space Administration (NASA) on Saturday.
He hopes the immediate vicinity of the blast meteor combing with a metal detector to search for fragments. He assumed there would be a meteorite hunter who came to the city, the closest from Moscow.
He explained that the meteorite selling price depends on the size, shape rarity, provenance, and arranging materials. The most common type of rock and iron mixture that is prevalent mineral in the earth could be valued around 20 U.S. dollars per small pieces.
"The composition of celestial bodies can explain the origin of meteorites. So, if it is known from Mars then the price will soar high," said Chris Palma, a professor of the Department of Astronomy and astrophysics, Pennsylvania State University.
Record sales ever of a meteorite moonstone named Dar al Gani 1058 weighing 1.9 kilograms which sold for 330,000 dollars at auction in the U.S.. Celestial body was discovered in Libya in 1998.
Then meteorite found in Argentina weighing 161 pounds sold for 93,000 dollars on eBay in 2006. Although heavier, apparently a meteorite from Mars-Jupiter asteroid sold cheaper.
Gutheinz explained that anyone who was discovered meteorites and want to sell it should get the certification of experts on authenticity.
"The site eBay might be a good place for buying and selling. However, if you want to take it to auction and get certified then you should work with an independent analyst," he said.
In 1998, a NASA special agent, working undercover to catch Gutheinz unscrupulous sellers fake moon rock. Apparently, it took him a job that has a genuine moon rock worth 5 million dollars.

Large Asteroid Will Seen in the Sky Sumatra - Indonesia

CALIFORNIA - Scientists say the asteroid measuring 45 meters wide will cross the Earth on Friday, February 15, 2013. Named DA14, an asteroid the size of half a football field size is said to be witnessed in Indonesia, especially in Sumatra.

Launched Space, Wednesday (13/02/2013), not only the asteroid will pass between the Earth and the Moon's orbit, but also lower than the rings flying geosynchronous communications, weather and navigation satellites. The asteroid will be at the closest distance to the Earth than the satellite at 5 thousand miles (8046 kilometers).

In the near distance, the western part of Indonesia or Sumatra reportedly could see the huge space rock. In Sumatra, the asteroid will be within 17,200 miles (27.680) from the surface of Earth on Friday at 2:24 pm EST (1924 GMT).

150 ft wide sized asteroid is said to move quickly. NASA researchers think that the asteroid is moving across the solar system at the speed of 17,450 mph (28,100 kilometers per hour).

This space object contains silicate material and make it as asteroid type S. Is this asteroid will hit the Earth? Scientists say that the asteroid is not going to get slammed into the Earth.

Astronomers have created a map of the path the asteroid. Thus, it can be seen that the shortest distance of approximately 17,100 miles (27,520 kilometers) is not going to touch the surface of the Earth.

NASA provides satellite operators with information about the asteroid. Thus, no satellite communications, weather or a GPS that will obstruct the path asteroid.teroid Big Sky Will Look in Sumatra