Irregular galaxies are a type of galaxy that do not have a distinct shape, unlike spiral or elliptical galaxies. They often appear chaotic and lack the organized structure seen in other galaxy types. Irregular galaxies can contain a mix of young and old stars, along with large amounts of gas and dust, which can lead to ongoing star formation. These galaxies are typically smaller than their spiral and elliptical counterparts and can be found in various locations throughout the universe. Examples of irregular galaxies include the Large Magellanic Cloud and the Small Magellanic Cloud, both of which are satellite galaxies of the Milky Way.