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Comets

Small, icy bodies that revolve around the sun, usually with long periods, that are made up of a nucleus, coma and two tails- one composed of ions and the other composed of dust. Also, a small celestial body composed at least partially of ices. Comets either orbit the Sun or pass through the Solar System on hyperbolic orbital paths.

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  • Part of Speech: noun
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  • Industry/Domain: Earth science
  • Category: Geology
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