infrared galaxy

American

noun

Astronomy.

a galaxy that radiates strongly in the infrared portion of the electromagnetic spectrum.

Etymology

Origin of infrared galaxy

First recorded in 1965–70

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infrared galaxy

A prime example of this phenomenon is the nearest ultraluminous infrared galaxy, Arp 220, which is located 250 million light-years away.

From Scientific American ● Nov. 16, 2021

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023