astrophysics Hear it!

astrophysics definition

astro·phys·ics (-fiz′iks)

noun

the main branch of astronomy which deals primarily with the physical properties of the universe, including luminosity, density, temperature, and chemical composition

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Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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