Galaxy growth is a research area in astrophysics which focuses on the understanding of how galaxies evolve and grow in size and mass over time. This field explores the formation and evolution of galaxies, including the processes of star formation, accretion of gas, mergers with other galaxies, and interactions with their environments. Scientists study the growth of galaxies using a combination of observations, simulations, and theoretical models to understand the underlying physical mechanisms driving their evolution. By studying galaxy growth, researchers aim to unlock the mysteries of the universe's history and the formation of structures on cosmic scales.