Most galaxies are either spiral or elliptical (“lenticular” galaxies fall somewhere inbetween). A typical spiral galaxy, the Pinwheel Galaxy (M101, NGC 5457). A dwarf elliptical galaxy, M110 (NGC 205). A new arXiv preprint describes the discovery of LEDA 074886, which has a unique rectangular shape. LEDA 074886 is thought to have formed as a result … Continue reading A rectangular galaxy