Scientists for the first time have observed an unusual repeating light signal from a distant quasar. They believe that these signals indicate towards the final stages of a merger between two supermassive black holes. Findings of the discovery were published in the journal Nature.
According to researchers, such mergers represent crucial steps in the evolution of large galaxies and the supermassive black holes that lie at their centers. They also play an important role in regulating the formation of star in a galaxy.