Comets aren’t the ones that hit Earth. Comets are made up of frozen gases, rock, ice, and dust, and they come into view when they get close enough to the sun. They orbit our solar system briefly before being launched back into space. Meteorites are the ones that hit the earth. They are a piece of a meteor that actually survive the impact with Earth. Some observations say that meteorites can enter the atmosphere at speeds between 7 and 45 miles per second (that’s very fast). This only increases as it approaches the ground because gravity yanks it inward at a velocity of 9.8 meters per second squared (the force of gravity for Earth).
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