Avogadro (Moon)

Named after Amedeo (Conte Di Quarengna) Avogadro - Italian physicist (1776-1856).

Avogadro is an ancient lunar crater that is located in the northern hemisphere on the far side. The formation has been heavily worn and eroded by subsequent impacts, so that the rim is now little more than a rounded edge surrounding the crater depression. The crater floor is equally worn, being covered in a multitude of smaller craters of various sizes. Many of these smaller craters have also been eroded, leaving little more than a faint trace on the surface. (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.