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dark star

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dark star

 
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–noun Astronomy.
an invisible member of a binary or multiple star system.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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dark star  
n.  A star that is normally obscured or too faint for direct visual observation, especially the component of an eclipsing binary star detectable by spectral analysis or in the eclipse of the bright component.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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