Earth Was Destroyed By Asteroid Every 1 Million Years

According to NASA's near-Earth orbit to calculate the project, Earth on average every five years will be the impact of a football-field-sized rocky objects, average per million level in the emergence of a civilization destroyed asteroid. Last year, more than scientists had called attention to the threat of asteroid humans. In November, more than 100 leading scientists signature initiative to take active measures to prevent the asteroid threat. Experts suggest that investment in the detection and monitoring of near-Earth objects should be increased a hundredfold.

In March, a Danish NGO announced plans to develop an aircraft to save the planet, an asteroid called hypervelocity impact spaceship HAIV, this system will be able to transmit about 100 days and reach the near Earth asteroids in the asteroid impact Earth before its destruction.

It is estimated that there are about 25,000 dimension greater than 140 meters NEOs, they are close but not necessarily impact occurred and the Earth.

Information map can be observed through the cost-effectiveness of different asteroids, value, accessibility and size.

Webster and his colleagues used the planet's resources Asterank database, containing a total of 600,000 asteroids.