Bessarion (Moon)

Named after John Bessarion - Greek scholar (1403-1472).

Bessarion is a lunar impact crater located near the southwest edge of Mare Imbrium. Bessarion is a bowl-shaped crater with a low central rise and a higher albedo than the maria, making it a brighter feature when the sun is overhead. Just to the north is a smaller crater Bessarion E that also has a high albedo. (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.