English

Noun

active galaxy ‎(plural active galaxies)

1. (astronomy) A galaxy where a significant fraction of the energy output is not emitted by the normal components of a galaxy.

See also

• AGN, active galactic nucleus
• Sy, Seyfert galaxy
• radio galaxy
• Q, QSO, quasar
• BL Lac, BL Lac object, BL Lacertae object
• blazar
• starburst galaxy