Bilharz (Moon)

Named after Theodor Bilharz - German doctor, zoologist (1825-1862).

Bilharz is a lunar impact crater that lies in the eastern part of the Mare Fecunditatis. It is the largest member of a close triple-crater formation with Atwood to the east and Naonobu to the northeast. To the southeast is the prominent crater Langrenus. The interior of this crater has been resurfaced by basaltic lava, leaving the floor flat, shallow, and nearly featureless. (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.