 In the first redaction of his Commentary on Aristotle’s Meteorology Oresme stated the supralunar location of comets, a unique opinion for a medieval philosopher (Kirschner 2000c; for the identification of the anonymous manuscript as Oresmian see Panziza 2015). Oresme’s view of the celestial nature of the Milky Way was also unconventional, otherwise only held by Albert the Great and Henry of Langenstein.