Meteorite will fly over the Earth in 2020.

<P Align=center> </ P> <P> Technology Channel (http://tech./) news: International Astronomical Union on August 18 announced that they will set up a special expert group to study to come from .space threats. .Scientists say the theory, this threat is very large, which includes both the ever-changing solar activity and radiation, also known as not including "unknown object" the possibility of collision and other threats. .In fact, astronomers will use most of their time to observe that the potential of our planet may be the risk of collision objects. .Such objects exist. .</ P> <P> Today, only in our solar system, more than 1,100 statistics experts from a dangerous target, their orbits point to the direction of the Earth. .At the same time, there is space from distant objects towards the possibility of our solar system, who can tell in the end the number of potentially dangerous objects like it. .</ P> <P> astronomer explained that all of the asteroids have been caused by the possible danger to the planet the size and extent of the classified. .Among them the largest asteroids may cause a global catastrophe: demise of all life on Earth, because Earth's orbit change caused by climate change, or to our planet then split into several small pieces. .</ P> <P> Nick Kaiser of Hawaii Institute of Astronomy, said: "Our goal is to hit the asteroid before we found them." </ P> <P> need to mention is that scientists in Hawaii .install four large telescopes and photographic equipment,. .They continuously monitor the solar system will be used to identify dangerous objects in space. .</ P> <P> comfort people scientists have to say that there is no danger now target fly to Earth. .But, if such a goal there, we humans have not withstand such hazards. .</ P> <P> now many countries are concerned about the problem of monitoring the risk of meteorites. .For example, the United States continues to monitor the near-earth space program funding to find dangerous objects, some European countries are also targets for the above observations. .</ P> <P> However, another problem has placed in front of people. .The absence of a clear standard to define what kind of goals is dangerous. .For example, if a global catastrophe can cause the target that is a dangerous meteorite, then the present, the near-Earth space has no such meteorites and other celestial bodies. .However, if some of the standard reduced to about 100 m in diameter meteorite is defined as the risk of target, then a total of 103 objects coming to us, the first meteorite of them close to the time of our planet in 2020. .Experts said that if the 100 meters in diameter hit the meteorite came to us, then it is fully capable of destroying a large city and caused the earthquake and a series of reactions. .</ P> <P> Now, preliminary estimates, the global total of about 100,000 near the small target, they can enter into our atmosphere and fall to the earth's surface. .Such things have occurred many times, most recently appeared on the Indian Ocean in 2004. .</ P> <P> to turn over data, there are many on Earth have been formed by the meteorite impact craters, such as the 1908 explosion in Tunguska, but fortunately there is a forest and no human habitation. .Scientists say the collision with 1500 tons can be comparable to the atomic bomb. .</ P> <P> same time, there is some good news, according to the latest monitoring data shows that the most dangerous asteroid 99942 starting track, which reduces the degree of risk. .</ P> <P> there are many scientists are not optimistic, for example, if when there is a near Earth objects large enough, then people may not be able to escape their doom. .First, most objects are very hard, like Hollywood movies show them shattering as it is impossible, then they are very high flying speed, in order to hit them with a nuclear bomb, like jumping a train at full speed. .</ P> </ p>.