An irregular galaxy is a type of galaxy that does not have a distinct regular shape, unlike spiral or elliptical galaxies. These galaxies often appear chaotic and lack a defined structure, which can result from gravitational interactions with other galaxies or the influence of nearby matter. They are typically rich in gas and dust, providing the necessary materials for star formation. Irregular galaxies can vary greatly in size and brightness. Some well-known examples include the Large Magellanic Cloud and the Small Magellanic Cloud, both of which are satellite galaxies of the Milky Way. These galaxies are important for studying the processes of star formation and galaxy evolution.