Mass distribution refers to how mass is spread out in an object or system. It can be described in terms of density, which is the mass per unit volume. Understanding mass distribution is important in fields like physics and engineering, as it affects how objects behave under forces, such as gravity. In astronomy, mass distribution helps scientists study celestial bodies like planets, stars, and galaxies. By analyzing how mass is distributed within these objects, researchers can learn about their structure, formation, and evolution. This information is crucial for understanding the dynamics of the universe.