Named after Jan Gadomski - Polish astronomer (1889-1966).
Gadomski is a lunar crater on the far side. It is located to the south of the much larger crater Fowler, and to the west of Klute. This crater, like many features , has an eroded outer rim that has been modified by subsequent impacts. A merged pair of craters is attached to the exterior of the southern rim, and satellite crater Gadomski X is attached along the north-northwest. (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.