The Laniakea Supercluster is a vast group of galaxies that includes our own Milky Way. It spans about 520 million light-years and contains approximately 100,000 galaxies. This supercluster is part of the larger cosmic structure known as the observable universe. Discovered in 2014, the Laniakea Supercluster is defined by its gravitational influence, which pulls galaxies towards its center. The name "Laniakea" means "immense heaven" in Hawaiian, reflecting its vastness. It is a significant feature in the study of cosmology, helping scientists understand the large-scale structure of the universe.