Rosse (Moon)

Named after William Parsons, Third Earl of Rosse - Irish astronomer (1800-1867).

Rosse is a bowl-shaped lunar impact crater located in the southern part of Mare Nectaris. To the southwest is the large, flooded crater Fracastorius. The interior of the crater has a higher albedo than the surrounding lunar mare, making it readily visible. While it lacks a ray system of its own, it lies across rays that cover the Mare Nectaris. (wikipedia entry)

A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.