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Cosmic Background Explorer

Cosmic Background Explorer (COBE) A NASA satellite launched in 1989November to map the cosmic microwave background (CMB). It carried three sets of instruments: a group of three Differential Microwave Radiometers (DMRs) to look for irregularities in the CMB; the Far-Infrared Absolute Spectrometer (FIRAS) to measure the spectrum of the CMB; and the Diffuse Infrared Background Experiment (DIRBE) to search for infrared radiation from forming galaxies. COBE's most important results were the discovery of irregularities in the CMB on the level of 1 part in 10⁵, and the confirmation that the spectrum of the CMB is a black body with a temperature of 2.73 K.

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Related entries from encyclopedias, dictionaries, and thesauruses

	Cosmic Background Explorer Book article from: The Columbia Encyclopedia, Sixth Edition see infrared astronomy . Read more
	cosmic microwave background Book article from: A Dictionary of Astronomy cosmic microwave background ( CMB ) A faint, diffuse glow...mm; also known as the microwave background radiation or cosmic background radiation . Its existence was...x2009;K. Measurements by the Cosmic Background Explorer satellite ( COBE ) showed that...recession of the ... Read more
	Explorer Book article from: A Dictionary of Astronomy Explorer An ongoing series of US scientific spacecraft. Explorer 1, launched on 1958January31...Van Allen Belts . More recent Explorers have included the International Ultraviolet Explorer and the Cosmic Background Explorer . A concurrent Small Explorer... Read more
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	COBE Book article from: The Oxford Dictionary of Abbreviations COBE Astronomy Cosmic Background Explorer Read more

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