Asteroids near Earth: are we in danger? - Interesting Engineering
Asteroids are rocky or metallic objects that fly in orbits around the Sun, but sometimes they can pass very close to Earth. How dangerous can they be?
This was the Chelyabinsk meteor, which exploded about 20 miles (30 km) above the city of Chelyabinsk in Russia on February 15, 2013. As the unnamed near-Earth asteroid fell, it was moving at over ele… [+3123 chars]
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