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cosmic microwave background

Also known as CMBR, MBR, CMB, relic radiation, microwave background radiation, cosmic microwave background radiation, cosmic background radiation

electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology

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The cosmic microwave background is leftover radiation from the very early universe, shortly after the Big Bang occurred. Scientists study it because it provides direct evidence about the universe's origin and earliest conditions.

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Wikidata facts

Instance of: astronomical phenomenon
Subclass of: thermal radiation
Has part: photon
Image: WMAP 2012.png

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Commons category: Cosmic microwave background
discoverer or inventor: Robert Wilson
time of discovery or invention: 1964-05-20
temperature: 2.72548
has characteristic: polarization
has cause: recombination
theorized by: George Gamow
title: fond diffus cosmologique
redshift: 1089.57
different from: cosmic background radiation
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
topic has template: Template:CMB

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Encyclopedic overview

Temperature map of the cosmic microwave background measured by the Planck spacecraft

Expansion · Future

Excerpted from Wikipedia’s “cosmic microwave background” article, available under the CC BY-SA 4.0 licence.

cosmic microwave background

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