Mar 29, 2009

Astronomical feat! Live asteroid hit the Earth

Astronomers detected the first time in the course of an asteroid hit the Earth, but also from its follow-up period is still space to bring it, the last and the collection and analysis of meteorites. This was published in "Nature" the study of scientific journals, not only to allow scientists to know more about the F-type asteroids, and perhaps inspire them to consider how to avoid future occurrence of the tragedy of the Earth into a planet. 



 This 14 meters wide, 83-tonne, about the bus-sized asteroid is arrived at in October last year, 19 hours before the Earth was discovered, astronomers also have an unprecedented opportunity for observation and the final route of projectile scene for the fireball. Similar to the asteroid-sized objects, it is difficult to detect in space, there is 3-4 per year into the Earth. 



 I am astonished that there is some remnants of the asteroid had not completely destroyed during re-entry, but landed in the northern part of Sudan, about 29 kilometers stretch of the Nubian Desert. By December, astronomers mobilized civil 45 University students and teachers line up in the desert meteorite fragments of a search and finally found 280 meteorites weighing from 1. 283 grams to five grams, ranging from a total of about four. 45 kilograms, the whole process is like a needle in a haystack. 



 California, "Institute of search space intelligence" (SETI) astronomers that the probability of follow-up to the Asteroids, "is only one chance of a lifetime." Involved in monitoring this asteroid Belfast Northern Ireland Queen's University professor fee, points out that scientists are now able to predict not only where the asteroid will be rammed, but also early warning, to obtain relevant information immediately. 



 The United States Arizona viewing an amateur, and October 6 last year, reported the coordinates of an asteroid discovered in Cambridge, Massachusetts to the Minor Planet Center. This is just one of hundreds of routine records, but the computer system has the magic to refuse this extra information. Gaspar, director of the center told the "natural": "I see this information and to manually make a track, it is obvious that crashed into the Earth." 



 Asteroids of this size and brightness of the Earth should not pose a risk, but Gaspar safety procedures in accordance with the standards of practice, direct-dial NASA (NASA) hotline. He also reminded the Jet Propulsion Laboratory rationale of Sanchez, who immediately calculate the asteroid orbit. Computer program shows that the probability of an asteroid hit the Earth up to hundred percent, will hit the atmosphere within 13 hours, forces one to two tonnes of TNT equivalent TNT. 



 It was named 2008 TC3, was later renamed . I Tower (Arabic meaning for the station on the 6th)." It is classified as F-type asteroids are very rare types of meteorites. Only one. 3% F is a class of asteroids, formed in 45 billion years ago, with the Earth and other planets about the solar system at the same time. Since then most of the time it at between Mars and Jupiter around the sun outside the asteroid belt running it into a collision of another track, and narrow the gap between the earth, eventually assisted by gravity at the Earth into the Earth onto the road. 



 Stay in the Nubian Desert Station "on the 6th station" and the town of Al-fat people, are said to see the return of "fireball similar to the Rocket." KLM in Africa over the driver, also 2008 TC3 to 12,000 meters per second speed collision the atmosphere, reported that there is to see a bright flash on the ground.

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