There are a few asteroid belts in our solar system, but none can compare to the main belt, a massive ring between the orbits of Mars and Jupiter. Here the dwarf planet Ceres, the large asteroids 2 Pallas, 10 Hygiea and 4 Vesta, and millions of small asteroids and dust particles orbit the Sun. Most of the larger asteroids have elliptical orbits and an orbital period of a few years. Some astronomers believe that the main belt's contents are left over from a planetary collision of from a planet that never formed due to the strong gravitational pull of Jupiter.
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