Aldrin (Moon)

Named after Edwin Eugene, Jr. ("Buzz") Aldrin - American astronaut (1930-Live).

Aldrin is a tiny impact crater located on the southern part of the Mare Tranquillitatis, to the east of Sabine. It is located about 50 kilometers to the northwest of the Apollo 11 landing site. About 30 kilometers to the east is the landing site of the Surveyor 5 lunar probe. This crater was previously identified as Sabine B before being named by the IAU. (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.