galactic nucleus
noun
the region at the center of a galaxy, such as the Milky Way; often contains one or more black holes.
galactic nuclei
-
pluralof galactic nucleus.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
One leading idea is that little red dots are supermassive black holes known as active galactic nuclei.
From Science Daily ● Aug. 17, 2026
"This indicates that there must be a continuous source of carbon in these galactic nuclei fueling this rich chemical network."
From Science Daily ● Feb. 12, 2026
Active galactic nuclei occur when material spirals into a galaxy's central black hole, forming an extremely hot accretion disk.
From Science Daily ● Nov. 29, 2025
In her own space sciences research at WashU, Gokus focuses on the high-energy emission of active galactic nuclei, in particular blazars.
From Science Daily ● Apr. 30, 2024
There are two brighter spots, one in the curve and the other in the dot, which could be the galactic nuclei, or the centers of the galaxies, Britt says.
From National Geographic ● Aug. 9, 2023
