The liberal arts - Allegory of Astronomy

The frescoes are part of a cycle consisting of six medallions and another mutilated fragment, depicting the seven Liberal Arts, according to the iconography established in the 5th century AD by the African grammarian Marziano Capella in De nuptiis Mercurii et Philologiae: Grammar, Dialectic, Rhetoric, Geometry, Arithmetic, Astronomy and Music.

Astronomy, with two large wings and a head sprinkled with stars, holds the armillary sphere in her left hand.