Macula (planetary geology)
Macula (pl. maculae) is the Latin word for 'spot'. It is used in planetary nomenclature to refer to unusually dark areas on the surface of a planet or moon. They are seen on the icy surfaces of Jupiter's moon Europa, Saturn's moon Titan and Neptune's moon Triton. The term was adopted for planetary nomenclature when high resolution pictures of Europa revealed unusual new surface features.
- "Descriptor Terms (Feature Types)". Gazetteer of Planetary Nomenclature. International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN). Archived from the original on 2014-06-23. Retrieved 2014-08-26.
- Greeley, Ronald; Raymond M. Batson (2007). Planetary Mapping. Cambridge University Press. p. 116. ISBN 0-521-03373-X.
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