Gerberto e l'Astronomia
  Gerbert of Aurillac was Pope Sylvester II form 999 to 1003. His history is presented in order to understand his outstanding contribution in the establishment of quadrivium sciences (arithmetics, music, geometry and astronomy) in the curricula studiorum of cathedral schools and therefore of forthcoming universitates studiorum. Gerbert allowed the first sharing of arabic scientific scientific culture (e.g. Introducing in his didactic method the astrolabium, the abacus and the monochord) with Christian world participating in person to the mini-renaissance of the tenth century. 
Costantino Sigismondi
physics.hist-ph astro-ph.IM