W-News | Giant Meteor As In Russia Also Fall In South Sulawesi | Meteor in Chelyabinsk, Central Russia have similarities with similar events in the waters Bone, South Sulawesi, October 8, 2009. The incident marked the fireball and trail a thick fog in the sky with the sound of explosions and glass house shook.
"However, analysis of data 'ultrasound' concluded that fell in Russia is about 17 meters, while in the Bone about 10 meters., So the impact is not as big as in Russia. Addition, the asteroid Bone Bone fall deep waters," said Deputy Science, Assessment, Aerospace Information and National Aeronautics and Space Agency (Lapan), Prof. Dr. Thomas Djamaluddin in Jakarta. Thus quoted between, Tuesday (19/2).
The fall of an asteroid in Chelyabinsk, Russia admitted on February 15, 2013, injuring more than 1,000 people, but not due to debris falling meteor, but a shock wave that destroyed the building in the city.
Asteroid the size of Russia's entry into the Earth's atmosphere at speeds of about 20 km / sec or about 70,000 km / h and appears as a ball of fire when it entered into the dense atmosphere at an altitude of 120 km which is then accompanied by traces of heavy fog, he said.
When an altitude of about 30-20 km, with a reduced rate but still faster than the speed of sound (supersonic speeds), meteors (asteroids that enter Earth's atmosphere) caused a shock wave effects and explosions sound (sonic boom), he said.
Asteroids have a warming and atmospheric braking by the breakup of an asteroid impact, but do not bombard people, and only a few pieces of the shot reaches the earth's surface, such as a fall on a frozen lake and made a big hole in the ice.
"Kejutlah wave that destroyed many buildings, and broke the glass and injuring more than 1,000 people, including a loud explosion was caused by a wave. So it was not caused by a collision or breakup of an asteroid to earth," he said.
He said a small asteroid like Bone or Russia is very difficult to detect because it just seemed like a very dim star, even if observed by sophisticated telescopes in the search space patrol program objects near the Earth.
"Because of ruination, even if the distance is usually detected very close to the earth, so it is not longer possible anticipation. Anyway there is no technology to counter the speed asteroid about 70,000 km / h," he said.
The only telescope meteor observers recorded only asteroid 2008 TC3 asteroid that crashed in Sudan 19 hours since it was identified and assessed is small, about 6 meters.