Fesenkov (Moon)

Named after Vasilii Grigor'evich Fesenkov - Russian astrophysicist (1889-1972).

Fesenkov Crater is an impact crater in the Lunae Palus quadrangle of Mars. (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.