Byrgius

Byrgius is located in the west in the southern highlands, the most notable feature being the Byrgius crater. It also includes Crüger, Vieta, Cavendish, Fourier and a several other minor craters. Geological Survey | Topographical Map This region is named after the Swiss clockmaker and mathematician Joost Bürgi (1600 AD). He made mechanical models representing [...]

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Cassini

Cassini is located in the north, the most notable features being the Cassini and Aristillus craters. The region is located in the Mare Imbrium (Sea of Rains). To the north, there is a small range of mountains called the Montes Alpes. Being in a mare the region is relatively flat except the northwest, which borders [...]

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Clavius

Clavius is located in the southern highlands, the most notable feature being the Clavius and Maginus craters. Being located in the southern highlands, the terrain is rough, but the lunar dust is lighter which offers greater contrast. Geological Survey | Topographical Map This region is named after the German Jesuit mathematician and astronomer Christopher Clavius, [...]

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Cleomedes

Cleomedes is located in the east, the most notable features being the Cleomedes crater and the Mare Crisium (Sea of Crises). To the east there is the smaller Mare Anguis (Sea of Snakes). The terrain flat in the south and rough to the north. Geological Survey | Topographical Map This region is named after the [...]

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Colombo

Colombo is located in the east, the most notable feature being the series of craters including Colombo, Gutenberg, and Goclenius that traverse the region diagonally from the northwest to the southeast. There is a sea on either side of these craters, Mare Fecunditatis (Sea of Fecundity) to the northeast and the Mare Nectaris (Sea of [...]

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Copernicus

Copernicus is centrally located, the most notable feature being the Copernicus crater, which is probably only rivaled by Tycho as the most visible crater on the Moon. The region contains other minor craters including Eratosthenes. If the lunar seas were filled with water, Copernicus would be an island surrounded by several seas. Geological Survey | [...]

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Eudoxus

Eudoxus is located in the north, the most notable feature being the Eudoxus crater. A second smaller crater called Bürg is surrounded by the Lacus Mortis (Lake of Death). To the southwest lies the Mare Serenitatis (Sea of Serenity). In the center of the region is the Lacus Somniorum (Lake of Dreams) and to the [...]

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Fracastorius

Fracastorius is located in the east on the edge of the southern highlands, the most notable features being the Fracastorius and Piccolomini craters. To the northwest of this region lies part of the Mare Nectaris (Sea of Nectar). Geological Survey | Topographical Map This region is named after the Venetian physician and scholar Girolamo Fracastoro [...]

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Geminus

Geminus is located in the north, the most notable features being the Geminus, Hercules and Atlas craters. To the southwest of this region lies part of the Lacus Somniorum (Lake of Dreams). Geological Survey | Topographical Map This region is named after the Greek astronomer and mathematician Geminus of Rhodes (50 AD). He is known [...]

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Grimaldi

Grimaldi is located in the west, the most notable features being the Grimaldi crater. In the northeastern portion of this region lies part of the Oceanus Procellarum (Ocean of Storms). Geological Survey | Topographical Map This region is named after the Italian mathematician and physicist Francesco Maria Grimaldi (1650 AD) who made instruments to measure [...]

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