An Indo-French collaboration has yielded a pioneering technique for identifying closely merging supermassive black holes in the cosmos. The article explores this breakthrough and its significance in the field of astrophysics. Detecting such merging events is challenging due to their elusive nature, but this new technique promises to enhance our understanding of these phenomena. Supermassive black holes play a crucial role in the evolution of galaxies and the universe itself, and studying their interactions can provide valuable insights into cosmic processes. The development of this innovative method underscores the importance of international cooperation in advancing our knowledge of the universe and its mysterious celestial objects. This achievement marks a noteworthy contribution to the field of astronomy and opens up exciting opportunities for future discoveries in the realm of supermassive black holes.