Cosmic Microwave Background

Cosmic Microwave Background

The Cosmic Microwave Background (pronounced: /ˈkɒzmɪk ˈmaɪkroʊˌweɪv ˈbækˌgraʊnd/), often abbreviated as CMB, is the thermal radiation left over from the time of big bang cosmology.

Etymology

The term "Cosmic Microwave Background" is derived from its nature and discovery. "Cosmic" refers to its origin from the cosmos, "Microwave" indicates the type of electromagnetic radiation, and "Background" signifies its omnipresence in the universe.

Related Terms

• Big Bang: The theoretical event that led to the formation of the universe, from which the CMB originated.
• Redshift: A phenomenon in physics related to the expansion of the universe, which also affects the CMB.
• Cosmology: The scientific study of the origin, evolution, and eventual fate of the universe.
• Planck Satellite: A space observatory operated by the European Space Agency (ESA) which has provided detailed measurements of the CMB.

See Also

• Cosmic Background Explorer
• Cosmic Inflation
• Cosmic Neutrino Background
• Cosmic Strings

References

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