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cosmic noise

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cosmic noise

–noun
Physics. radio-frequency noise that originates outside the earth's atmosphere.

Origin:
1945–50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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cosmic noise  
n.  Radio-frequency radiation originating outside Earth's atmosphere, such as that originating from sunspots.
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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