The Astronomica, also known as Astronomicon, is a Latin didactic poem about celestial phenomena, written in hexameters and divided into five books. The Astronomica was written c. AD 30–40 by a Roman p
The universe, as described by Manilius, is made up of two spheres: one solid (Earth) and the other hollow (the firmament), resembling this 17th-century depiction in Andreas Cellarius's Harmonia Macrocosmica.
Most of the work's fifth book deals with the myth of Andromeda (left), Perseus (upper right), and a sea monster (lower right).