Faculae

n. bright spot on the surface of the sun (Astronomy)

For the genus of gossamer-winged butterflies, see Facula (butterfly). 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 why the Sun is actually brighter when sunspots are more numerous.
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Noun
1. a bright spot on a planet
(hypernym) topographic point, place, spot
2. a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots
(hypernym) topographic point, place, spot

N F
little torch

faculae /'fækjulə/
danh từ, số nhiều faculae (thiên văn học) vệt sáng trên mặt trời
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