Lorentz (Moon)

Named after Hendrik Antoon Lorentz - Dutch physicist; Nobel laureate (1853-1928).

Lorentz is a huge lunar crater that lies just beyond the northwest limb , in a region that is brought into sight of the Earth during favorable librations. This formation is nearly as large as the Mare Nectaris on the near side , although it has not been submerged by lava as have the lunar mare. Sections of the crater floor are, however, level, particularly an arc along the western rim. But this last region is still marked by a number of tiny craterlets. (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.