Nergal (Ganymede)

Assyro-babylonian king of the underworld.

Nergal crater is a crater on Jupiter's moon Ganymede. It has a distinctive ejecta blanket surrounding it that's darker nearer the craters and brighter further away. The inner region of the ejecta is characterized by a lobate appearance indicative of the flow of a liquid substance over the surface. (wikipedia entry)

A crater is a circular depression likely created by an impact event. On Ganymede they are named after gods and heroes of ancient Fertile Crescent people.