Galaxy mergers refer to the process in which two or more galaxies collide and eventually merge into a single larger galaxy. This phenomenon is relatively common in the universe, as galaxies are constantly in motion and gravitational forces can lead them to interact and merge over time. Galaxy mergers can have a variety of effects on the resulting galaxy, such as triggering bursts of star formation, altering the structure and morphology of the galaxy, and influencing the distribution of dark matter. Studying galaxy mergers can provide valuable insights into the formation and evolution of galaxies, as well as the role of mergers in shaping the large-scale structure of the universe.