In the media from time to time there are reports of asteroids that would supposedly threaten our planet. About a terrible threat to the life writing books and shooting films. In fact, while the world is not in danger. Anyway, so say members of Nikolaev Astronomical Observatory, the correspondent ProUA.
Total dangerously close to the Earth (of that about 15 million kilometers), is about half a thousand asteroids, some of which occasionally fall on other planets in the solar system or our faithful companion moon.
But the atmosphere protects the Earth, in which the "newcomers" are burned. A sufficiently large asteroid diameter is not yet in sight, although not all of them are known to scientists. Therefore, to protect yourself from unpleasant surprises astronomers continue to monitor their wards and to prepare recipes for Action, "in case of emergency."