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An asteroid is a small object similar to a minor moon that orbits a star. They have varying compositions depending on their semi-major axis, and far-out asteroids are usually more icy. If an asteroid approaches a habitable planet, it may destroy any life there.
Asteroid is part of a series on verses.
|Universe • Hypercluster/Void • Supercluster • Galaxy cluster • Galaxy/Dwarf galaxy • Cluster • Star • Planet • Moon • Asteroid • Continent • Country • State • City • Entity • Compound • Atom • Subatomic particle • Quark • Preon • String|