Galactic-nucleus meaning

The central region of a galaxy, containing a higher density of stars, dust, and gas than the rest of the galaxy and appearing brighter than the rest of the galaxy.
noun
0
0
The center of a galaxy, usually small, very bright, and containing a high density of stars and other objects. &diamf3; An active galactic nucleus is a nucleus that emits more radiation than can be explained in terms of stars alone. Blazars and quasars are thought to be active galactic nuclei; the nuclei of Seyfert galaxies are also active, and are thought to contain an extremely massive black hole .
0
0
Advertisement