Overview

galactic nucleus


Show Summary Details

Quick Reference

The very central regions of a galaxy. A galaxy's nucleus often has a complex structure, with a dense cluster of stars within the inner few light years, and it can be the site of considerable activity. If the activity is high, with considerably more radiation emitted than can be accounted for by normal formation and evolution of stars, it is classed as an active galactic nucleus.

Subjects: Astronomy and Astrophysics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.