a nebula in the Milky Way.
noun 1. unidentified radio-frequency radiation originating from beyond the solar system.
- Galactic nucleus
galactic nucleus The center of a galaxy, usually small, very bright, and containing a high density of stars and other objects. ◇ 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 […]
/ɡəˈlæktɪˌkəʊ/ noun 1. (informal) a famous and highly paid footballer
noun, Astronomy. 1. the plane of the galactic equator. noun 1. the plane passing through the spiral arms of the Galaxy