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ring galaxy

American  

noun

Astronomy.

  1. a galaxy having the shape of an elliptical ring: thought to be the result of a collision of two galaxies.

Example Sentences

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The Cartwheel, located about 500 million light-years away from Earth in the constellation Sculptor in the southern sky, is a rather rare type of galaxy that astronomers call a ring galaxy.

From Scientific American • Aug. 4, 2022

When a small galaxy runs into a larger one face-on it can produce one of the loveliest of the rare irregulars, a ring galaxy thousands of light-years across, set against the velvet of intergalactic space.

From "Cosmos" by Carl Sagan

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.