Spiral Galaxies
Spiral galaxies are a type of galaxy characterized by a flat, rotating disk with a prominent bulge in the center. They are named for the distinctive spiral arm structures that extend outward from the central bulge. Spiral galaxies typically contain a mix of older stars found in the bulge and younger stars found in the spiral arms. They often exhibit ongoing star formation activity and are known for their beautiful, intricate patterns. Examples of spiral galaxies include the Milky Way and the Andromeda Galaxy.