Astronomers for the first time the entire process of tracking the asteroid hit the Earth (Photos).

<P> Keywords: astronomy, asteroid hit the Earth </ P> <P> </ P> <P class=moduleSingleImg01 align=center> asteroid crashed in Sudan, one of residue </ P> <P align = center .> </ P> <P class=moduleSingleImg01 align=center> asteroid taken through a telescope pictures (of which the light points) </ P> <P align=center> </ P> <P class = moduleSingleImg01 align = .center> find the wreckage of the planet falling in a straight line of volunteers to search </ P> <P class=moduleSingleImg01 align=center> </ P> <P class=moduleSingleImg01 align=center> </ P> <P align = center .> </ P> astronomers for the first time the entire process of tracking the asteroid hit the Earth (Photos) <P class=moduleSingleImg01 align=center> "Katrina Sky Survey System" telescope managed by the University of Arizona, aims to capture the sky .a series of photos with a point to find fast moving objects to search for near-Earth asteroids. .The evening of 5 October 2008, Richard Kowalski (Richard Kowalski) saw the photos this footage. .</ P> <P align=center> </ P> <P class=moduleSingleImg01 align=center> calculated by astronomers, "2008 TC3" was then in collision with the Earth's atmosphere on track. .Was found in about 19 hours later, it is a hit Earth's atmosphere over the Nubian Desert in northern Sudan, 23 miles (about 37 km) at the explosion. .This photo was taken using a mobile phone, showing the "2008 TC3" into the Earth's atmosphere in trace left behind. .</ P> <P> </ P> <P> World Scientific reports [tech.]: According to foreign media reports, last year, astronomers in an asteroid hitting Earth's atmosphere before it is observed in space, which is astronomical .home for the first time observed the asteroid before impact traces. .Fortunately, scientists recently found the Sudanese desert asteroid and meteorite debris. .The wreckage may be the classification of meteorites and asteroids and accurately determine their formation process is essential. .</ P> <P> scientific significance </ P> <P> scientists in the latest issue of "Nature" magazine on the description of this discovery. .October 6, 2008, placed in Mount Lemmon, Arizona, "Katrina Sky Survey System" (Catalina Sky Survey) telescope to detect the asteroid. .Was found in 19 hours later, it collided with the Earth's atmosphere, the Nubian Desert in northern Sudan over the 23 miles (about 37 km) at the explosion. .</ P> <P> the explosion to a high pitch surface, scientists think that there will not be large meteorite debris fell on the ground. .Sudan Witnesses later said they saw a fireball, but disappeared shortly after the fireball. .However, the "SETI" (SETI) Institute astronomer Carl Sagan Center Jenny Scorpio Peter Adams (Peter Jenniskens) still believe that there may be found in the asteroid collided with the Earth's atmosphere resulting debris. .</ P> <P> Jenniskens and the University of Khartoum 穆阿维亚沙 Dade (Muawia Shaddad) and school students and staff, and follow the asteroid's flight path and, ultimately, efforts to .Shakespeare runs through 18 miles of a desert (about 29 km) of the area found a 47 meteorite fragments. .Jenniskens said: "This is our first opportunity to see our asteroid fragments in space, brought back to laboratory research." </ P> <P> the first track the whole process of the Earth flying objects </ .P> <P> Queen's University Belfast, UK Professor Alan - Feizimengsi was mainly responsible for monitoring the asteroid. .Feizimengsi said, "this event of great significance. This is the first time we flew near-Earth objects follow the whole process of the Earth. We can not predict where it will hit, but we can also make a fast enough .response, before it reaches the earth to obtain various information about it. "</ P> <P> astronomers can observe the size of the asteroid Zheke car speeding out of date in the space reflection of the sun, scientists think than .The asteroid that wiped out the dinosaurs sinking, much smaller. .View meteorite light or the spectrum signals that scientists previously classified on the asteroid, the only way they give a basis for asteroid classification is based on limited data. .However, stick to the asteroid surface layers of ash can cause astigmatism, unpredictable way, it may not show the internal rock types. .As a result, scientists difficult to asteroids and their meteorite found on Earth are compared - this is the new discovery is so important. .</ P> <P> </ p>.