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In the night sky: Orion
In the night sky: Orion

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A body made of mainly rocky materials (including metals) in orbit around the Sun, that is typically much less massive than a planet. Most asteroids are found in the asteroid belt between Mars and Jupiter. Asteroids (and comets) are often called minor planets. The largest known asteroid (Ceres) is classified as a dwarf planet.

» Orion Glossary