: a region at the center of a galaxy that produces an extremely large amount of radiation
Examples of quasar in a Sentence
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After three years, it’s studied nearly 15 million galaxies and quasars (super-bright cores at the centers of galaxies) to create the largest-ever 3D map of the Universe.
—
Jamie Carter, Forbes.com, 16 May 2025
The scientists found Big Wheel near a quasar, which is a powerful and active supermassive black hole, using the James Webb Space Telescope (JWST).
—Larissa G. Capella, Space.com, 4 Apr. 2025
This effect produced four distinct images of the same quasar in a cross-like pattern around the central galaxy, often referred to as an Einstein Cross.
—Sharmila Kuthunur, Space.com, 24 Apr. 2025
Among its findings are the measurements of nearly 15 million galaxies and quasars, some of the brightest objects in the universe.
—Ashley Strickland, CNN Money, 2 Apr. 2025
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Jamie Carter, Forbes.com, 16 May 2025
The scientists found Big Wheel near a quasar, which is a powerful and active supermassive black hole, using the James Webb Space Telescope (JWST).
—Larissa G. Capella, Space.com, 4 Apr. 2025
This effect produced four distinct images of the same quasar in a cross-like pattern around the central galaxy, often referred to as an Einstein Cross.
—Sharmila Kuthunur, Space.com, 24 Apr. 2025
Among its findings are the measurements of nearly 15 million galaxies and quasars, some of the brightest objects in the universe.
—Ashley Strickland, CNN Money, 2 Apr. 2025
See All Example Sentences for quasar
Cite this Entry
“Quasar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quasar. Accessed 24 May. 2025.
Copy CitationKids Definition
quasar
noun
qua·sar
ˈkwā-ˌzär 
also -ˌsär
: any of the very distant starlike heavenly objects that give off very strong blue and ultraviolet light and powerful radio waves
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