noun
Any of various celestial objects, including nebulae, star clusters, and galaxies, that are diffuse and very distant, and therefore faint, usually observable only by means of a telescope.
deep-sky object
THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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"deep-sky object." YourDictionary, n.d. Web. 18 January 2019. <https://www.yourdictionary.com/deep-sky-object>.
APA Style
deep-sky object. (n.d.). Retrieved January 18th, 2019, from https://www.yourdictionary.com/deep-sky-object
English Wiktionary. Available under CC-BY-SA license.
Link to this page
Cite this page
MLA Style
"deep-sky object." YourDictionary, n.d. Web. 18 January 2019. <https://www.yourdictionary.com/deep-sky-object>.
APA Style
deep-sky object. (n.d.). Retrieved January 18th, 2019, from https://www.yourdictionary.com/deep-sky-object
