Joy (Moon)

Named after Alfred Harrison Joy - American astronomer (1882-1973).

Joy is a tiny lunar crater located in the irregular ground just to the west of Mare Serenitatis. The crater was designated Hadley A until it was renamed by the IAU. Mons Hadley lies to the west-northwest in the Montes Apenninus range. (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.