Birmingham is the surviving remnant of a

lunar Lunar most commonly means "of or relating to the Moon". Lunar may also refer to: Arts and entertainment * ''Lunar'' (series), a series of video games * "Lunar" (song), by David Guetta * "Lunar", a song by Priestess from the 2009 album ''Prior t ...

impact crater An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters ...

. It is named after the astronomer

John Birmingham John Birmingham (born 7 August 1964) is a British-born Australian author, known for the 1994 memoir ''He Died with a Felafel in His Hand'', and his ''Axis of Time'' trilogy. Early life and education Birmingham was born in Liverpool, United ...

(not, as is often stated, the British city nor its Alabama namesake). The crater is located near the northern limb of the

Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...

, and so is viewed from the

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

at a low angle. All that survives of the original formation is an irregular perimeter of low, indented ridges surrounding the

lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or un ...

-resurfaced interior. The inner floor is marked by several tiny craterlets, and the surface is unusually rough for a walled plain. The low angle of illumination allows fine details of this boulder-strewn field to be seen more clearly.

Location

The Birmingham formation lies just to the north of the

Mare Frigoris Mare Frigoris (Latin ''frīgōris'', the "Sea of Cold") is a lunar mare in the far north of the Moon. It is located in the outer rings of the Procellarum basin, just north of Mare Imbrium, and stretches east to north of Mare Serenitatis. It is ju ...

, and to the east of the walled plain W. Bond. To the northeast is the smaller crater Epigenes, with Fontenelle to the west.

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Birmingham.

References

* * * * * * * * * * * * Impact craters on the Moon {{Craters on the Moon: A–B