19. How long are comets? (A K2S Question)
From The Space Library
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Revision as of 18:13, 11 June 2014
The nucleus of a comet is usually a few miles across. The coma, or fuzzy head, of a comet may be a few thousand miles across. The tail of a comet can be up to several million miles long.
Answer provided by Alan Hale, Ph.D. & Capt. USN (Ret.) William Readdy
Question and Answer extracted from the book Kids to Space - by Lonnie Schorer
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