Campanus (Moon)

Named after Campanus of Navara - Italian astronomer (c. 1200-1296).

Campanus is a lunar impact crater on the southwestern edge of Mare Nubium. It forms a crater pair with Mercator just to the southeast. Along the southern rampart is the small lunar mare named Palus Epidemiarum. To the southwest is the small crater Dunthorne. (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.