Einstein is a large

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 depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...

that lies along the western limb of the

Moon The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...

, which makes it difficult to observe from the

Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...

. The visibility of this formation is subject to

libration In lunar astronomy, libration is the cyclic variation in the apparent position of the Moon that is perceived by observers on the Earth and caused by changes between the orbital and rotational planes of the moon. It causes an observer to see ...

effects, but even under the best conditions not much detail can be observed except from lunar orbit. Nearby craters of note include

Moseley Moseley ( ') is an affluent suburb in south Birmingham, England, south of the city centre. It is located within the eponymous Moseley ward of the constituency of Birmingham Hall Green and Moseley (UK Parliament constituency), Hall Green and ...

just to the north,

Dalton Dalton may refer to: Science * Dalton (crater), a lunar crater * Dalton (program), chemistry software * Dalton (unit) (Da), a.k.a. unified atomic mass unit * John Dalton, chemist, physicist and meteorologist * 12292 Dalton, an asteroid Ent ...

along the eastern rim,

Vasco da Gama Vasco da Gama ( , ; – 24 December 1524), was a Portuguese explorer and nobleman who was the Portuguese discovery of the sea route to India, first European to reach India by sea. Da Gama's first voyage (1497–1499) was the first to link ...

just to the southeast, and Bohr to the south-southeast. The formation

Vallis Bohr Vallis Bohr is a valley on the Moon stretching due south of the crater Einstein. This wide cleft has a length of about 80 kilometers, and is radial to the Mare Orientale impact basin further to the south. The selenographic coordinates of this fe ...

is visible to the south. The outer rim of this walled plain has been strongly obliterated by many smaller impacts. Occupying the center of the interior floor is Einstein A, an impact crater with

terrace Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk a ...

d inner walls and a central peak. The outer

rampart Rampart may refer to: * Rampart (fortification), a defensive wall or bank around a castle, fort or settlement Rampart may also refer to: * LAPD Rampart Division, a division of the Los Angeles Police Department ** Rampart scandal, a blanket ter ...

of this concentric crater spreads across the interior floor, covering over half the diameter of Einstein. Several smaller craters also lie scattered across the floor, but there are sections of relatively flat surface in the southwest part of the floor. Two small craters on the west side have fractured floors. These are believed to be

secondary crater Secondary craters are impact craters formed by the ejecta that was thrown out of a larger crater. They sometimes form radial crater chains. In addition, secondary craters are often seen as clusters or rays surrounding primary craters. The study of ...

s from the Orientale impact to the south.The geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J.

USGS The United States Geological Survey (USGS), founded as the Geological Survey, is an government agency, agency of the United States Department of the Interior, U.S. Department of the Interior whose work spans the disciplines of biology, geograp ...

Professional Paper: 1348. Figure 3.9 A
online
The widespread notion that this crater was discovered by

Patrick Moore Sir Patrick Alfred Caldwell-Moore (; 4 March 1923 – 9 December 2012) was an English amateur astronomer who attained prominence in that field as a writer, researcher, radio commentator and television presenter. Moore's early interest in astro ...

in 1939 is probably erroneous. In the middle of the 20th century Hugh Percy Wilkins designated the crater ''Caramuel'' to honor

Juan Caramuel y Lobkowitz ''Juan'' is a given name, the Spanish and Manx versions of '' John''. The name is of Hebrew origin and has the meaning "God has been gracious." It is very common in Spain and in other Spanish-speaking countries around the world and in the Phili ...

. The crater was known under this unofficial name for some time, but neither this name, nor almost all of Wilkins' other nomenclature, were adopted by the

International Astronomical Union The International Astronomical Union (IAU; , UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and developmen ...

. In 1963 E. Whitaker and D.W.G. Arthur named thie crater ''Einstein'' after

Albert Einstein Albert Einstein (14 March 187918 April 1955) was a German-born theoretical physicist who is best known for developing the theory of relativity. Einstein also made important contributions to quantum mechanics. His mass–energy equivalence f ...

, and in 1964 this name was adopted by the IAU. Wilkins' map also contained a crater called Einstein, but it is a less prominent one – .

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 Einstein.

References

Sources

* * * * * * * * * * * * * {{Craters on the Moon: C-F Impact craters on the Moon

Satellite craters

See also

References

Sources