cosmic microwave background


The microwave radiation that arrives at the Earth from every direction in space. The detection of this radiation played an important role in acceptance of the Big Bang theory.

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notes for cosmic microwave background

This radiation is sometimes referred to as the “echo” of the Big Bang.

Words nearby cosmic microwave background

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.