A DISTANT SUPERMASSIVE black hole is flaring in a surprisingly regular pattern, and astronomers think it betrays the piecemeal devouring of a star. On November 14, 2014, the All-Sky Automated Survey for Supernovae (ASAS-SN), a global network of 14-cm robotic telescopes, detected a flare in the core of a misshapen galaxy 570 million light-years away.
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