The crater nomenclature is governed by the International Astronomical Union, and this list only includes features that are officially recognized by that scientific society.
The large majority of these features are impact craters. Some sources also list a Palus Nebularum ("Marsh of Mists") at 38.0° N, 1.0° E, but the designation for this feature has not been officially recognized by the IAU. Mare Struve ("Struve's Sea"), near MessalaĪ related set of features are the Lunar lacus (singular lacus, Latin for " lake"), which are smaller basaltic plains of similar origin:Ī related set of features are the sinus (singular sinus, Latin for "bay") and paludes (singular palus, Latin for "marsh"):.Mare Novum ("New Sea"), northeast of Plutarch.Mare Parvum ("Small Sea"), immediately to the east of Inghirami.There is also a region on the Lunar farside that was briefly misidentified as a mare and named Mare Desiderii (Sea of Dreams). Riccioli's map of the Moon was drawn by Francesco Maria Grimaldi, who has a crater named after him. The modern system of lunar nomenclature was introduced in 1651 by Riccioli. This list also includes the one oceanus and the features known by the names lacus, palus and sinus. They do not contain any water, but are believed to have been formed from molten rock from the Moon's mantle coming out onto the surface of the Moon. Lunar maria (singular mare) are large, dark, regions of the Moon.
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