The article analyses Primo Levi’s poems In the Beginning and The Dark Stars, focusing on their main metrical, stylistic, rhetorical, and thematic aspects, thereby taking particular account of their interdisciplinary and intertextual nature. The commentary, accompanied by introductory paragraphs and a conclusion, goes through the two poems individually, investigating on the one hand the effect of the hybridisation between science and poetry in Levi's work, and on the other hand the heterotrophic relationship between poetry and prose.