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, Laniakea is defined by its gravitational influence, which pulls galaxies toward its center. It is located in the direction of the constellation Virgo and is one of the largest known superclusters, showcasing the immense scale of the universe and the complex web of cosmic structures.