ASTR 1110H – Fall 2009 – Choices for first essay – Due Sept. 15^th

8-10 pages, double spaced, last page lists the references you used

Choose one of the following topics to research and write about. Try to use something besides Wikipedia.

1) Julian Calendar Reform

2) Gregorian Calendar Reform

3) The Mayan Calendar System

4) The Egyptian Calendar System

5) The Chinese Calendar System

6) The History of Determining Longitude at Sea

7) The Saros Cycle

8) Babylonian Astronomy

9) Claudius Ptolemaeus (Ptolemy)

10) Aristarchus of Samos