This Double-Ringed Galaxy Is One of the Rarest Types Ever Seen

Astronomers recently mapped the rarest type of galaxy ever found: an elliptical galaxy sporting rings of young stars. Most galaxies, including our own Milky Way, are spiral or elliptical. "The different colors of the inner and outer ring suggest that this galaxy has experienced two different formation periods," lead study author Burcin Mutlu-Pakdil, a graduate student at the University of Minnesota Duluth, said in a statement.