Piazzi Smyth (Moon)

Named after Charles Smyth - Italian-born Scottish astronomer (1819-1900).

Piazzi Smyth is a small lunar impact crater in the eastern part of the Mare Imbrium. This is an isolated feature located about 100 kilometers to the southwest of the Montes Alpes mountain range. To the southeast of this crater is Mons Piton, an isolated mountain that rises to a height of 2.3 km and occupies a diameter of about 25 km. This crater is a nicely circular feature with a rim and interior that have not been significantly modified by impacts. (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.