A galactic nucleus refers to the central region of a galaxy, typically containing a supermassive black hole surrounded by dense clusters of stars, gas, and dust. Studying galactic nuclei provides valuable insights into the formation and evolution of galaxies, as well as the interaction between the central black hole and surrounding matter. Research in this area often involves observations of the dynamics and properties of these central regions, as well as their impact on the galactic environment and beyond. Additionally, studying galactic nuclei can help astronomers understand phenomena such as active galactic nuclei, quasars, and other high-energy cosmic events.