The galactic plane is the flattened, disk-shaped region in which most of the stars and gas in a galaxy are found. In the context of our own Milky Way galaxy, the galactic plane refers to the plane of the Milky Way, which is visible as a band of light stretching across the night sky. This region is of particular interest to astronomers studying the structure and dynamics of galaxies, as well as the distribution of stars, gas, and dust within the galaxy. Research in this area often involves studying the properties and composition of stars and interstellar material in the galactic plane, as well as investigating the formation and evolution of galaxies as a whole.