Large-scale structure refers to the vast arrangement of galaxies and galaxy clusters in the universe. These structures form a web-like pattern, with galaxies grouped into clusters and superclusters, separated by large voids of empty space. This organization helps astronomers understand the distribution of matter and the evolution of the universe. The study of large-scale structure involves mapping the positions of galaxies and analyzing their movements. This research provides insights into fundamental concepts like dark matter and dark energy, which play crucial roles in the universe's expansion and overall dynamics. Understanding these structures helps scientists explore the universe's history and future.