Laniakea Supercluster

The Laniakea Supercluster (Laniakea; also called Local Supercluster or Local SCl ) is the galaxy supercluster that is home to the Milky Way, our galaxy, and 100,000 other nearby galaxies It was defined in September 2014 , when a group of astronomers including R. Brent Tully of the University of Hawaii and Hélène Courtois of the University of Lyon published a new way of defining superclusters according to the relative velocities of galaxies. The new definition of the local supercluster subsumes the prior defined local supercluster, the Virgo Supercluster, now an appendage.