Brief History of Astronomy

Medieval Astronomy

IX-XI century A.D.: Intensive development of Arabic and Persian astronomy (star charts and catalogues, planets and the Moon movement, better estimations of the Earth size, and calendar improvement
A.D. 813: Al Mamon founds the Bagdad school of astronomy. Mathematike Syntaxis by Ptolemy is translated into Arabic as al-Majisti (Great Work) later called by Latin scholars Almagest
A.D. 903: Al-Sufi draws up his star catalogue
1054: Chinese astronomers observe supernova in Taurus (now this supernova remenents are known as the Crab Nebula (M1)