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Comet
Definition
A small icy body that, as it approaches the Sun, releases gas and dust forming a coma and a tail. Comets are remnants of the primitive Solar System. The Rosetta probe studied comet 67P/Churyumov-Gerasimenko.
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A small icy body that, as it approaches the Sun, releases gas and dust forming a coma and a tail. Comets are remnants of the primitive Solar System. The Rosetta probe studied comet 67P/Churyumov-Gerasimenko.