Zwicky (Moon)

Named after Fritz Zwicky - Swiss astrophysicist (1898-1974).

Zwicky is a lunar impact crater on the far side. It lies to the west of the crater Aitken, and is attached to the western rim of Vertregt. Attached to the northern end is Heaviside. Zwicky is a considerably eroded formation with an irregular rim and interior. (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.