ABSTRACT
Eudemus' History of Astronomy appears to be a record of major and indisputable achievements. In antiquity there were two different theories of lunar light, each sharing the belief that the light of the moon is caused by that of the sun. Theon of Smyrna cites Eudemus' authority for the following statement: "Anaximenes was the first to discover that the moon has its light from the sun and in which way it suffers an eclipse". Olympiodorus describes a view common to Anaxagoras and Democritus, according to which, "the luminaries have both their own light as well as light received from the sun. The solid body of the moon does not absorb the light, but the heat of the sun. On account of this absorbed heat, it has additional dim light, like that of a hot piece of coal.
