Arrhenius (Moon)

Named after Svante August Arrhenius - Swedish chemist; Nobel laureate (1859-1927).

Arrhenius is an impact crater in the Eridania quadrangle on Mars at 40.3° S and 237.4° W. and is 129.0 km in diameter. Evidence of previous glacial activity is evident in images. There also appear to be branched channels just outside the crater. (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.