During the Hellenistic and Roman periods, much of the Greek and non-Greek astronomers working in the Greek tradition studied at the Musaeum and the Library of Alexandria in Ptolemaic Egypt.
Pada zaman Hellenistik dan Romawi, kebanyakan astronom Yunani dan non-Yunani yang bekerja dalam tradisi Yunani belajar di Musaeum dan Perpustakaan Aleksandria di Mesir Ptolemaik.