As reported by NASA, in early February near Rio de Janeiro fell over 7 meter chunk of space rock. Nothing has happened to anyone, but as the researchers stress-become a can. The problem with the meteorites this size is such that, unlike larger objects it is impossible to predict their impact with the ground.How inform astronomers from NASA (Near Earth Object Program), every day our planet bombarded with them with approx. 100 tons of space debris. Most of them are incinerated in the atmosphere, and those who enter by it are too small to cause any damage. However, there is such a category of the asteroid, about the size of not more than 50 metres, which we are not able to be notice before falling to the ground. And in theory, they can cause even the destruction of entire cities.
Danger falls happen more often then we expect
The ranks of such objects was a meteorite, which fell in 2013 in Chelyabinsk oblast in Russia. Rock with a diameter of more than 17 yards after hitting the ground caused an explosion with a magnitude of 500 thousand tons of TNT (more than 33 times greater than the bomb that destroyed Hiroshima). It was created as a result, shock wave damaged more than 7.5 thousand buildings and caused damage and life of more than 1.5 thousand people.
Compared with this event, Brazilian meteorite of February looks quite innocently. It fell into the ocean at a distance of almost a thousand miles to the East of Rio do Janeiro with force. 13 thousand tons of TNT (for comparison once again Hiroshima-15 thousand). It was hitting too small to trigger a tsunami, did not result in any direct damage.
What is worthy, it remained practically unnoticed even after the impact. For nearly a month now, when NASA revealed the information about it, no one knew that this situation took place at all.
A small asteroid with a size of 20 to 50 metres pass by the Earth with a fairly heavy rotation , approx. 30 meters, it will finds himself in a small distance from the planet back in March. If fallen in the atmosphere and hit one of the bigger cities, victims would be counted in the millions. And would know about it too late to be able to deal with anything.
However, as emphasized by the researchers, the rocks so small that they could not get their noted much earlier, yet large enough to be able to cause noticeable loss, hit the ground very rarely at most once for several centuries. And if it comes to the larger objects that would be able to invoke the disaster on a global scale, according to the researchers, nothing like that threatens us over at least the next 100 years. NASA have some ideas for dealing with the problem, lets see what will happen in the future.