AS101 : Chapter 3 astro.docx
Document Summary
Brief history: carved bone 8500 years old of crescent moon found in africa (one of the earliest ones, predicted seasons from orientation of horns of crescent moon each month, 2500bce, egyptians used first rising at dawn of star sirius (brightest star) to mark the beginning of a 365 day calendar it identified with the fertility goddess iris, appeared in predawn sky every year as nile began its life giving floods happened yearly. That"s how they predicted their planting season and prepare for floods: egyptians also divided night and day into 12 hours, sun was used for predicting seasonal changes and lunar phases, stonehenge giant boulders aligned with seasonal motion of the sun, babylonians (first female astronomer was named that moon goddess) she was astronomer priestess of potamia , chinese people made earliest known supernova explosion and recorded solar and lunar eclipses (it was powerful enough to be brightest than venus and visible during the day for 23 days)
