From supernova to something much more intriguing at the core of galaxy 253-3 – NASASpaceflight.com

On 14 November 2014, a bright flash flagged the All Sky Automated Survey for Supernovae, or ASAS-SN — a global network of 20 telescopes managed at Ohio State University in the U.S.  The flash originated in galaxy ESO 253-3, located 570 million light-years away.
The sudden burst of energy was examined by astronomers and categorized as a likely supernova and assigned the event designation ASASSN-14ko.  Six years later, Anna Payne, a NASA Graduate Fellow at the University of Hawaii at Mnoa, discovered…

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