Active galactic nucleus: References & Edit History

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Article History

Type Description Contributor Date
Article title updated for style. Nov 09, 2026
Video added. May 31, 2023
Corrected display issue. Mar 20, 2023
Invalidated site: National Aeronautics and Space Administration - Introduction to Active Galactic Nuclei. Mar 11, 2019
Add new Web site: National Aeronautics and Space Administration - Introduction to Active Galactic Nuclei. Aug 02, 2011
Add new Web site: How Stuff Works - Science - Active Galaxies. Aug 02, 2011
Add new Web site: The University of Alabama - Astronomy Program - Active Galactic Nuclei. Aug 02, 2011
New article added. Feb 05, 2009
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