Appleton (Moon)

Named after Sir Edward Victor Appleton - British physicist; Nobel laureate (1892-1965).

Appleton is a heavily eroded lunar crater that lies in the northern hemisphere on the far side. To the northwest are the craters Von Neumann and Campbel. The smaller Golovin lies to the northeast, while further to the southwest is the Mare Moscoviense. The crater wall and interior have been heavily eroded by many subsequent impacts, leaving the features rounded and irregular. (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.