Galaxy clustering is a research area in astronomy that studies the distribution and spatial arrangement of galaxies in the universe. Scientists analyze the patterns of how galaxies are clustered together in order to better understand the underlying structure and formation of the universe. By studying galaxy clustering, researchers can gain insights into the large-scale distribution of matter and dark matter in the cosmos, as well as the processes that have shaped the evolution of galaxies over billions of years. This field of study plays a key role in advancing our knowledge of cosmology and the origins of the universe.