quasars

Cultural

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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This overwhelming brightness allows quasars to outshine their host galaxies and makes them visible to telescopes across vast cosmic distances.

From Science Daily • Dec. 27, 2025

Because both types of light originate near the same black hole, astronomers have long known that ultraviolet and X-ray emissions from quasars are closely linked.

From Science Daily • Dec. 27, 2025

Scientists believe this light plays a key role in generating the even more energetic X-rays emitted by quasars.

From Science Daily • Dec. 27, 2025

Although quasar activity peaked in the early Universe, quasars were rare and spread apart by hundreds of millions of light years.

From Space Scoop • Jul. 4, 2025

There were clusters of freckles on her forearms and wrists, an entire Milky Way spreading across her forehead, even a few sputtering quasars flung into the wormholes of her ears.

From "Middlesex: A Novel" by Jeffrey Eugenides

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