Facula
From Wikipedia, the free encyclopedia
- 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.
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