The Asteroid Day falls on June 30th to remember the Tunguska event when an asteroid exploded in the atmosphere above Siberia, vaporizing 2,000 square kilometers of forest.
The event that was to be remembered occurred on June 30, 1908, when an asteroid of 30-50 meters in diameter penetrated into the atmosphere and exploded at 8 kilometers on Tunguska, Siberia.
The explosion instantly released an energy equivalent to that of a thousand atomic bombs of the "Hiroshima" type and destroyed a large forest area.
Statistically, an event of the kind of Tunguska can happen once every 200 years: more than a catastrophe that has never been known much, the Asteroid Day is a warning to humanity because the clash between Earth and an asteroid , Even small in size, can cause a catastrophe.
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Thanks to the telescope network that surrounds the sky, 1,000 asteroids have been discovered since 1898-2000, but in recent years the number is growing at a rate of 1,000-2,000 per year. Not everyone is dangerous to the Earth, but the warning is, in the end, that unknown objects that span space near Earth are so many.
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