Ristoro or Restoro d'Arezzo was an Italian monk of the 13th century, author of the Composizione del Mondo of c. 1282.
This is the first astronomical work to be written in Italian (Tuscan). It contains also, as its title (The Composition of the World) suggests, geological theories: these covered the internal structure of a spherical shell Earth, fossils, and erosion, amongst others.
He observed a solar eclipse in 1239 and noted the exact time spend in totality.
- Alberto Morino (editor) (Lavis, La Finestra editrice 2006), La composizione del mondo, Restoro d'Arezzo
- Called a ‘vernacular astronomy primer’
- In fact the first scientific work in Italian; see the external link. Also it is the first Italian prose work.
- Peter Pesic Sky in a Bottle Cambridge MA:2005- MIT Press Page 27
- Dante Alighieri.
- There has been some past scholarly controversy over whether this work really is by Dante.