... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: What created this unusual partial ring around Saturn? ... Since the arc occupies the same orbit as the small moon Anthe , a leading hypothesis holds that the arc was created by, and is replenished by, meteor impacts on Anthe. Similar arcs have been previously discovered, including an arc associated with the small Saturnian moon Methone , one arc related to Saturn's G ring , and several arcs orbiting Neptune . ...