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Asteroids: Earth in danger
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Astronomical and geological study theories work with the following statistics:

Every 10 million years, a 5 km asteroid hits Earth.
Every 500,000 years, a 1 km one hits.
Every 100 years, a 55-meter asteroid hits.


June 30, 1908, was the last one, measuring 84 meters; since then, none larger than 50 meters have been recorded.

The 2004MN4, measuring 328 meters, will cross our orbit on April 13, 2029. Could it be the one?

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