Description Comets are made up of loose collections of ice, dust, and small rocky particles. It slightly resembles a dirty snowball, and is about the size of a mountain.
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Asteroids
Most asteroids are found between the orbits of Mars and Jupiter. This region is called the asteroid belt.
Meteors
A meteor is when a meteoroid enters Earth's atmosphere, which was a chunk of rock or dust in space. They come from comets or asteroids.