According to Russian media reported on August 18, the Internationalspace> Astronomicalspace> Union on August 18 University announced that they will set up a special expert group to study to come fromspace> space,space> a variety of threats.space>
Scientificspace> family that, in theory, this threat is very large, which includes both the ever-changing solar activity and radiation, also known as not including "space> unknownspace> object "the possibility of collision and other threats.space> In fact,space> astronomyspace> scientists will use most of his time to observe that the potential may be ourspace> planetspace> risk of collision objects.space> Such objects exist.space>
Today, only in our solar system, more than 1,100 statistics experts from a dangerous target, they point to trackspace> the Earthspace> 's direction.space> At the same time, there came from far awayspace> in space objects toward the possibility of our solar system, who can tell in the end how many of the potentially dangerous objects do.
Astronomy scientist explained that all of the asteroids are in accordance with its potential to earth the size of the risks and the degree of classification. 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, then our planet or to split into several small pieces.
Hawaiian Astronomical Institute of Nick Kaiser, said: "Our goal is to hit the asteroid before wefound them. "
Need to be mentioned is that of science home to install four large telescopes in Hawaii, and photographic equipment. They will be used to continuously monitor the solar system in space to identify dangerous objects.
Current scientific family have comforted people say is that there is no risk of the target to fly the earth . At the same time, if such a goal there, we humans have not withstand such hazards.
Many countries are concerned about the problem of monitoring the risk of meteorites. For example, the United States continued to monitor the near-earth space program funding to find dangerous objects, some European countries are also targets for the above observations.
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 could lead to the goal that is dangerous meteorites, then the current in the near-Earth space has no such meteorites and other celestial bodies. However, if the lower standards of some, to about 100 m in diameter meteorite is defined as the risk of the target, then a total of 103 objects coming to us, the first meteorite of them close to our planet's time for 2020. Experts said that if the 100 meters in diameter meteorite hit to us, then it can completely destroy the city and caused a large earthquake and a series of reactions.
Now, preliminary estimates, the Earth a total of about 100,000 near the small target, they can enter into our atmosphere and fall to the Earth's surface. Such a thing has occurred many times, most recently appeared on the Indian Ocean in 2004.
Opened historical information, the Earth has been many since the formation of meteorite impact craters, such as the 1908 explosion in Tunguska, but fortunately there is a forest, no human habitation. Scientific family, said the impact with 15 million tons level comparable to the atomic explosion.
There are also some good news, according to the latest monitoring data shows that the most dangerous asteroid 99942 starting from the track, it reduces the degree of risk.
There are still many scientific family is not optimistic, for example, if when there is a large enough object near the Earth , then it may not be able to escape their doom. First, most objects are very hard, like Hollywood movies show them shattering as it is not possible, followed by their flight speed is very high, in order to hit them with a nuclear bomb, like jump on a train traveling at full speed.