Sandra Faber, Donald Lynden-Bell, Roberto Terlevich and Gary Wegner. The team used distance measurements of 400 elliptical galaxies obtained through an empirical method called the Dn-sigma relation, which were then combined with redshifts to create maps of peculiar velocity. The team found that galaxy peculiar velocities were caused by a large mass concentration they dubbed "the Great Attractor".

Intense efforts during