Irregular galaxies are a type of galaxy that do not have a distinct shape, unlike the more common spiral or elliptical galaxies. They often appear chaotic and are filled with young stars, gas, and dust. This irregularity can result from gravitational interactions with other galaxies or from the remnants of galaxy collisions. These galaxies are typically smaller and less massive than their more structured counterparts. Famous examples of irregular galaxies include the Large Magellanic Cloud and the Small Magellanic Cloud, which are both satellite galaxies of the Milky Way. Their unique shapes and star formation processes make them fascinating subjects for astronomers.