Macrophysics refers to the study of large-scale phenomena in the physical world. It encompasses everything from the behavior of galaxies and the formation of planets to the properties of materials and their interactions with one another. Synonyms for macrophysics include cosmology, astrophysics, materials science, and condensed matter physics. These fields all deal with the behavior of matter and energy on a macroscopic level, and they are united by the fact that they are concerned with understanding the most fundamental principles of the physical universe. Whether you are studying the cosmos or the properties of solids, macrophysics is an essential branch of physics that provides insights into the workings of the world around us.