A first Greek book on astronomy (said to be by Hermes Trismegistus) was translated into Arabic in 742 A.D. (125 A.H.) The Abbasid caliph al Mansur had the Persian astronomer Nawbakht, and later his son, accompany him.
Kitabu cha kwanza cha Kiyunani juu ya unajimu (yasemekana kiliandikwa na Hermes Trismegistus) na kutafsiriwa katika Kiarabu mwaka 742 BK (125 BH) Khalifa wa Kiabbasid al Mansur alikuwa mnajimu wa Kiajemi Nawbakht, na baadaye mwanawe wa kiume, aliambatana naye.