microwave background

British  

noun

1. a background of microwave electromagnetic radiation with a black-body spectrum discovered in 1965, understood to be the thermal remnant of the big bang with which the universe began

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microwave background Scientific  

1. See cosmic background radiation

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Example Sentences

See Examples For:

microwave background

Although cosmic expansion and the microwave background have been studied extensively, measurements of primordial helium have historically received less attention.

From Science Daily ● Oct. 20, 2026

One is indirect, based on predictions of our cosmological model tuned to match the patterns in the cosmic microwave background, the faint afterglow of the Big Bang.

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

"We found that the inferred acceleration is directed mainly along the direction that we are moving locally, as indicated by the hotspot in the cosmic microwave background, and dies away with distance," explains Professor Sarkar.

From Science Daily ● Sep. 9, 2026

This is consistent with the observations of the microwave background radiation, which show that it has almost exactly the same intensity in any direction.

From "A Brief History of Time: And Other Essays" by Stephen Hawking

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