Head of a comet

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Astro*Dictionary by Michael Erlewine

1 article for "Head of a comet"

Head of a comet [Astro*Index]

The solid portion, or nucleus, and the coma of a comet. It is made of loosely packed chunks of ice, and frozen gases such as methane, carbon dioxide, and ammonia.

See also:
♦ Nucleus, Comet ♦ Coma