From the asteroid only a hair, the distance from the earth just escaped-kairui

A distance of only a "hair" just escaped from Earth Asteroid according to the British "Daily Telegraph" reported that the astronomer said last weekend the earth narrowly escaped — a blue whale than large asteroid whistled in between the earth and the moon and the day, from the literary point of view, the asteroid with the earth only a hair distance "". The asteroid and the earth, and the earth is less than 50 thousand miles (about 80 thousand km). And just a day ago, Brazil astronomers discovered this was named "2016 QA2" asteroid. On Saturday, astronomers at the Sonear Observatory in Brazil discovered 2016 QA2, which was named by the (Minor Planet Center), which is estimated to be between 80 and 180 feet in length (up to 55 meters). If the size of such an object hit the earth, it will certainly cause significant damage in the local area, but not enough to destroy human civilization. In comparison, Hiker caused the Chicxulub crater asteroids – people generally believe that the impact caused the extinction of dinosaurs, its width is approximately 6.2 miles (10 kilometers). In 1908, an asteroid in the vicinity of the Russian Siberia forest in the Tunguska River fall and large explosion caused the fire, and Siberia forest razed thousands of square miles to the ground. The width of the asteroid is thought to be about 200 feet to about 620 feet wide (up to 190 meters). In February 15, 2013, an asteroid about 65 feet (20 meters) in size exploded over Chelyabinsk, breaking several thousands of pieces of glass and injuring more than 1200 people. According to the data of the space network, the width of an asteroid needs more than 0.6 miles (1 kilometers), only to have the power to destroy mankind.相关的主题文章: