cosmic microwave background
CulturalDiscover More
This radiation is sometimes referred to as the “echo” of the Big Bang.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The other looks much farther back in time, using the cosmic microwave background to estimate what the expansion rate should be today based on the standard model of cosmology.
From Science Daily • Apr. 12, 2026
Throughout the decades, numerous observations of how dust, gas, and ripples in the cosmic microwave background, or the leftover radiation from the primordial plasma of the universe, moved indicated that dark matter exists.
From Salon • Dec. 26, 2024
The second method, called the early relic method, involves measuring the leftover light from the Big Bang in what is called the cosmic microwave background.
From Salon • Dec. 9, 2024
"Studying these waves from the early universe will help us build a complete picture of our cosmic history, analogous to previous discoveries of the cosmic microwave background."
From Science Daily • Mar. 8, 2024
“This could lead to something really groundbreaking,” Dr. Soares-Santos said, comparing it to the discovery of the cosmic microwave background in the 1960s, which has since transformed physicists’ knowledge about the early universe.
From New York Times • Jun. 28, 2023
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
