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quasars

Cultural  

  1. The most distant galaxies seen from the Earth, believed to be the first stage in the evolution of galaxies. The name is short for “quasi-stellar radio source.”

Example Sentences

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Astronomers noticed that regions around some of the brightest quasars in the early universe appeared to contain fewer galaxies than anticipated.

From Science Daily • Mar. 30, 2026

Scientists already knew that quasars can destroy this gas within their own galaxies, effectively shutting down local star formation.

From Science Daily • Mar. 30, 2026

Together, these datasets allowed scientists to analyze the X-ray and ultraviolet emissions of an exceptionally large sample of quasars.

From Science Daily • Dec. 27, 2025

Astronomers just found a record-breaking group of quasars in the most bizarre spot in the Universe!

From Space Scoop • Jul. 4, 2025

A number of other similar “quasi-stellar objects,” or quasars, have been discovered, all with large red shifts.

From "A Brief History of Time: And Other Essays" by Stephen Hawking

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.