Facula Look up facula or faculae in Wiktionary, the free dictionary. Facula (pl. faculae) is a bright spot on the surface of a planet or a star. It may refer to Solar facula Geology of Mercury § Faculae Bright spots on Ceres List of geological features on Titan § Faculae List of geological features on Callisto § Faculae List of geological features on Ganymede § Faculae Amalthea (moon) § Physical characteristics Topics referred to by the same term This disambiguation page lists articles associated with the title Facula.If an internal link led you here, you may wish to change the link to point directly to the intended article.