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.
The cluster is a dense collection of galaxies about 145 million light-years from Earth and is considered one of the best places to examine how active galactic nuclei interact with their surroundings.
From Science Daily ● Jul. 18, 2026
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
Known source candidates, such as active galactic nuclei or black holes with accretion disks emitting particle jets, tend to be more than 160 million light years away from Earth.
From Science Daily ● Nov. 23, 2023
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
They may come from supernovae remnants, active galactic nuclei or something else entirely—or, perhaps most probably, a mix of all these sources.
From Scientific American ● Jun. 29, 2023
