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

This interaction can create distinctive regions that appear as "holes" in observations of the cosmic microwave background.

From Science Daily ● Oct. 13, 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

One strategy is to look for repeated patterns in the cosmic microwave background.

From Science Daily ● Sep. 28, 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

Observations of the microwave background and of the abundances of the light elements indicate that the early universe did not have the kind of curvature required to allow time travel.

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

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