An asteroid could collide with Earth: What could happen, and should we worry?
An asteroid becomes a meteorite when it travels to Earth from a nearby orbit or the outer solar system and collides with Earth, according to the United States Geological Survey. Small asteroids typically burn up in the upper atmosphere before ever reaching Earth’s surface to become meteorites.
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Scientists say 2 asteroids may actually be fragments of destroyed planets from our early solar systemScientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.
Here's how scientists deflect asteroids after experts reveal exact locations where 'city destroyer' could hit.
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