AskDefine | Define facula

Dictionary Definition



1 a bright spot on a planet
2 a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots [also: faculae (pl)]

User Contributed Dictionary



  1. A bright spot or patch between sunspots

Extensive Definition

thumb|right|256px|The bright areas visible here on the Sun are facula.A facula (plural: faculae) is literally a "bright spot." It is used in planetary nomenclature for naming certain surface features of planets and moons, and is also a type of surface phenomenon on the Sun.
Solar faculae are bright spots that form in the canyons between solar granules, short-lived convection cells several thousand kilometers across that constantly form and dissipate over timescales of several minutes. Faculae are produced by concentrations of magnetic field lines, and are most commonly found in the vicinity of sunspots; this is how the Sun may be actually brighter when sunspots are more numerous.
facula in Arabic: صياخد
facula in Catalan: Fàcula
facula in Spanish: Fácula
facula in Italian: Facula
facula in Japanese: 白斑
facula in Korean: 광반
facula in Chinese: 光斑
facula in Arabic: بقع شمسية
facula in Bulgarian: Слънчево петно
facula in Catalan: Taca solar
facula in Czech: Sluneční skvrna
facula in Danish: Solplet
facula in German: Sonnenfleck
facula in Estonian: Päikeseplekk
facula in Spanish: Mancha solar
facula in Esperanto: Sunmakulo
facula in French: Cycle solaire
facula in Italian: Macchia solare
facula in Croatian: Sunčeve pjege
facula in Hebrew: כתם שמש
facula in Lithuanian: Saulės dėmė
facula in Hungarian: Napfolt
facula in Malayalam: സൗരകളങ്കങ്ങള്‍
facula in Dutch: Zonnevlek
facula in Japanese: 太陽黒点
facula in Polish: Plama słoneczna
facula in Portuguese: Manchas solares
facula in Russian: Солнечные пятна
facula in Slovenian: Sončeva pega
facula in Finnish: Auringonpilkku
facula in Swedish: Solfläckar
facula in Thai: จุดมืดดวงอาทิตย์
facula in Vietnamese: Vết đen Mặt Trời
facula in Chinese: 太阳黑子
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