: a region at the center of a galaxy that produces an extremely large amount of radiation
Examples of quasar in a Sentence
Recent Examples on the Web
The new findings describe a galactic battle between the galaxy on the right in the image above, which hosts an actively feeding black hole, a quasar, at its center, and its neighbor on the left, which is being bombarded by intense radiation that disrupts its ability to form new stars.
—
Sharmila Kuthunur, Space.com, 24 May 2025
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
See All Example Sentences for quasar
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Sharmila Kuthunur, Space.com, 24 May 2025
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
See All Example Sentences for quasar
Cite this Entry
“Quasar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quasar. Accessed 5 Jun. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share