Somerville (Moon)

Named after Mary Fairfax Somerville - Scottish physicist, mathematician (1780-1872).

Somerville is a small lunar crater in the eastern part. This is a roughly circular, bowl-shaped formation, with the larger but less conspicuous Langrenus H attached to the northwest rim. The rim has a protruding lip that extends slightly toward the southwest. (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.