comet - an icy space object that forms a tail when it passes near the sun, crater - large bowl-shaped cavity formed on a surface of a planet or moon caused by meteor impact large bowl-shaped cavity formed on a surface of a planet or moon caused by meteor impact , oort cloud - sphere of meteoroids and comets far beyond Pluto, Kuiper belt - region beyond Neptune containing many meteoroids and comets, meteorite - piece of rock that has fallen from the ground from outer space, asteroid belt - A region between Mars and Jupiter where many small and large meteoroids are formed, meteor - a space rock that enters the Earth’s atmosphere, shooting - name given to a very bright meteor, asteroid - large space rock orbiting the sun,

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