NASA «missed" a dangerous asteroid with our planet razminuvshis
While the world watched the situation unfolding around Syria on Saturday, flew past Earth fairly large asteroid the size of a football field. The interesting thing about this news is that NASA's astronomers, working at the observatory in Arizona, discovered the asteroid in just a few hours before he flew past our planet, that once again testifies in favor of the necessity of development of our planetary security.
After just 21 hours after discovery of asteroid 2018 GE3 approached on a very uncomfortable (at least from a psychological point of view), the distance from our planet. With a speed of approximately 106 000 km per hour space lump swept at a distance equal to half the distance between the Earth and the Moon. By earthly standards, it is certainly not impressive, but for space ... I'm sure at the time of observing them on the backs of astronomers repeatedly ran chill, especially when you consider the size of this object.
once or twice a week, scientists noticed asteroids approaching the planet at a distance closer to the distance between the Earth and the Moon. The truth is, in most cases these objects are no longer the bus, a maximum of a private house. Dimensions of the asteroid 2018 GE3 more like the size of a huge supermarket. According to preliminary calculations, the width of an object can range from 47 to 100 meters, that is, it is about 3, 6 times more than the object that exploded over the Siberian taiga in 1908. In this case, the amount of energy released as a result of the explosion, was in 185 times more than the explosion of a bomb dropped on Hiroshima. It is easy to imagine what the consequences we would expect if the asteroid 2018 GE3 "decided" to change direction and head straight for Earth.
"Fall 2018 GE3 to Earth - it would not have caused global but regional destruction. It is possible that the object would partially disintegrated during re-entry. Nevertheless, this is a fairly large asteroid. He has once again demonstrated that even large space rocks may amaze his unexpected appearance. The asteroid was first discovered less than a day before the closest approach to our planet "- says Portal SpaceWeather.com.
The complexity of detection asteroids is primarily due to their size and low albedo (reflectivity characteristics). In addition, they move very quickly, so it is difficult to track.
Space agency NASA is the program to detect asteroids, but it is mainly aimed at finding objects larger than 140 meters in diameter. According to the most daring estimated that an asteroid the size of 2018 GE3 is only 3/4 of that. Nevertheless, even these "stones" are able to cause serious damage. Recall that in 2013 exploded over the Chelyabinsk asteroid. As a result, the resulting shock wave that knocked out windows in many houses, affected more than 1,200 people. This stone is, by the way, was 3-6 times smaller than the object 2018 GE3.