Excerpt:
The Sumerians and ancient greeks were expert astronomers. I have not got much data on Sumerian astronomers, but suffice to say that they gave us the degree as a unit of angular measurement as they liked a sexagesimal system and 360 was almost the same as the number of days in a year. The Greeks came later but on quite a few of them I can find enough data to help me fill this page. Among them we find the following people: