cosmic microwave background
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This radiation is sometimes referred to as the “echo” of the Big Bang.
Example Sentences
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This interaction can create distinctive regions that appear as "holes" in observations of the cosmic microwave background.
From Science Daily ● Oct. 13, 2026
The cosmic microwave background is extraordinarily sensitive to changes in recombination.
From Science Daily ● Oct. 4, 2026
The first light able to travel freely from that moment on is what we now observe as the cosmic microwave background.
From Science Daily ● Oct. 4, 2026
Shifting the moment when the universe becomes transparent changes the size of the observed patterns in the cosmic microwave background.
From Science Daily ● Oct. 4, 2026
The cosmic microwave background — the afterglow of the Big Bang — shows a small but persistent asymmetry: a preference for one spatial orientation over its mirror image.
From Science Daily ● May 22, 2026
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