Quasar clustering refers to the tendency of quasars, which are incredibly luminous and energetic objects at the centers of galaxies, to group together in specific regions of the universe. Studying the clustering of quasars can provide valuable insights into the large-scale structure of the universe, as well as the formation and evolution of galaxies and supermassive black holes. By analyzing the distribution and spatial correlations of quasars in different regions of the sky, researchers can better understand the underlying physical processes that drive their formation and evolution.