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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

To explore this idea, the research team focused on one of the brightest known quasars, J0100+2802.

From Science Daily • Mar. 30, 2026

Perhaps the intense radiation from quasars was not only affecting their own galaxies, but also limiting star formation in nearby ones.

From Science Daily • Mar. 30, 2026

The follow-up observation using the Subaru Telescope revealed that these 11 quasars are not located inside dense galaxy clusters, as astronomers previously thought, but on the edge between two groups of galaxies.

From Space Scoop • Jul. 4, 2025

In considering the quasars, we confront profound mysteries.

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.