It was in the morning at that moment, the skies above Chelyabinsk showed several fireballs. The balls emitted with light which is more shiner 30 times than sunlight. With high-speed movements, the balls started fractioning at certain altitude. Even more, as we know that the high-speed of matter can produce huge explosion which is the same as 500 kilotons of TNT. It was a very destructible balls of bomb. It also created another form of energy i.e. shock wave which can have injured thousands of people. The shock wave can be imagined like a transparent flying saucer.
However, the dangerous did not only occur from the shock wave itself. The additional issue was the asteroid collision could create a nuclear reaction because of the element containing inside the asteroid. Otherwise, many nations currently are in the middle of researching nuclear particle for energy particularly in Russia. So, the additional disaster can be happened if the asteroid strikes the related area. Until the United Nations monitored the movements by using the infrasound stations. The institution finally had announced that the nuclear activity was prohibiting at that time.
The instrumentation used by the United Nations also showed interesting facts. The infrasound stations can detect space objects throughout the principle of sound waves. As we know that human has hearing threshold started from 20 to 20,000 Hertz. It means, we will exactly not be able to hear lower or higher than the threshold. But, the asteroid impacts happened in Chelyabinsk, Russia generated lower frequency than the human hearing. Therefore, the instrumentation is not only used for detecting the incoming asteroids but also others objects outside the Earth. And the fact is the objects particularly the asteroids have higher opportunity to strike earth five times than usual.
The authorized stations told that the asteroid striking in Chelyabinsk was supposed to be happened once every 20 to 30 years. It makes the Earth will be striking by the space objects about five times more regularly than the previous decades. Thus, the astronomers calculated the chance of space objects nearby the earth by using the extrapolation method. they found that the asteroids which has size around 100 meters in diameter will strike the earth within 120 to 150 years. The result shows to us every asteroid which has size lower than 100 meters could be impacting the Earth. It suggests us about many smaller space objects nearby the planet are ready to impact and this is a biggest revelation.