Sikorsky (Moon)

Named after Igor Ivanovich Sikorsky - Russian-American aeronautical engineer (1889-1972).

Sikorsky is a crater on the far side. It is situated behind the southeastern limb , just out of sight from the Earth. It lies to the northwest of the huge walled plain Schrödinger. To the northwest is the smaller crater Moulton. (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.