On the Universe (Ancient Greek: Περὶ Κόσμου, romanized: Perì Kósmou; Latin: De Mundo) is a theological and scientific treatise included in the Corpus Aristotelicum but usually regarded as spurious. It was likely published between the 3rd century BCE and the 2nd century CE. The work discusses cosmological, geological, and meteorological subjects, alongside a consideration of the role an independent god plays in maintaining the universe.