Sniadecki (Moon)

Named after Jan Sniadecki - Polish astronomer, mathematician (1756-1830).

Sniadecki is a lunar impact crater on the far side. This is a circular, bowl-shaped feature that is not overlain by any significant impacts. However the larger satellite crater Sniadecki Q is attached to the southwestern outer rim and has disrupted the rim edge somewhat. There is also a small crater attached to the western outer rim. (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.