 The mascon was confirmed and mapped at higher resolution with later orbiters such as Lunar Prospector and GRAIL.Like most of the other maria on the Moon, Mare Imbrium was named by Giovanni Riccioli, whose 1651 nomenclature system has become standardized.The earliest known name for the mare may be "The Shrine of Hecate"; Plutarch records that the Ancient Greeks gave this name to the largest of the "hollows and deeps" on the Moon, believing it to be the place where the souls of the deceased were tormented.