Astronomy Picture of the Day . Cartwheel Of Fortune . ... 18.12.1998 . ... Credit Copyright: Kirk Borne ( STScI ), NASA Explanation: By chance, a collision of two galaxies has created a surprisingly recognizable shape on a cosmic scale - "The Cartwheel Galaxy" . ... In this case the large galaxy may have originally been a spiral, not unlike our own Milky Way, transformed into the wheel shape by the collision. ... Publications with keywords: colliding galaxies . ... A Galaxy Collision in NGC 6745 . ...