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AS101 (238)
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October 11.docx

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Department
Astronomy
Course
AS101
Professor
Shohini Ghose
Semester
Fall

Description
October 11, 2011 History of Astronomy:  Development of astronomy: o Cave paintings in France from 15,000 BC ma suggest knowledge of lunar phases and some star patterns o Ancient people of central Africa (6500 BC) could predict seasons from the orientation of the crescent moon – this allowed them to determine when to plant seeds and grow their crops o 4000 BC Egyptians institute the 365 day calendar based on the periodic rising of Sirius – also helped them predict season o The Egyptians were also the first to divide the night and day into 12 hours, using the rising of bright stars o Scotland – 4,000 year old stone circle; moon rises as shown here every 18.6 years o England – Stonehenge (completed around 1550 BC); alignment of the stones at Stonehenge mark the rising and setting points of the sun at the solstices o 2354 BC, Babylon – first female astronomer recorded in history
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