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A cold sweat! An asteroid has just passed through the earth

  • Author:chinatopwin
  • Source:chinatopwin
  • Release on:2017-10-13
According to the National Aeronautics and Space Administration (NASA) news, Beijing time 13:40 
on October 12th, asteroid 2012 TC4 passed through the earth from Antarctica, the nearest 
distance is only about 42 thousand kilometers, equivalent to the distance to the moon 1/11, only 
slightly higher than the earth satellite orbit.

Fortunately, this asteroid is not big, NASA is estimated to be only 15-30 meters, and ESA ESA 
thinks it's only 10-20 meters.
Astronomers also say that it does not pose any threat to the planet, and that tracking 
observations also help to test and improve the global monitoring network.
The asteroid 2012 TC4 was first discovered in 2012, but not long after the asteroid tracking 
telescope. Its brightest magnitude is only 17, and it moves very fast. It's hard for astronomers to 
find it.