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missing mass

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missing mass

 
Use missing mass in a Sentence
–noun Astrophysics.
the difference in mass in the universe between that observed to exist and that necessary for the closed universe model.
Origin:
1975–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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missing mass  
n.  

  1. The mass needed to account for the difference between the observed mass of the universe and the mass needed to halt the expansion of the universe.

  2. The unobserved matter needed for the observed rotation of most galaxies to match theoretical predictions.

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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Science Dictionary
missing mass   (mĭs'ĭng)  Pronunciation Key 
See dark matter.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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