1. Astronomy Over the Ages

2. NOTES SET-UP

4. 170,000 BC humans just started wearing clothes
4500 BC – The wheel was invented

5. 3000 BC - Cunieform
2550 BC – Pyramids of Giza

6. 1700 BC – Last mammoth
1300 BC – King Tut

7. 1020 BC – Troy was destroyed
1250 BC – Hercules

8. 800 BC – Homer
753 BC – Rome is founded

9. 500 BC – Sanskrit

10. Earth is round
A sphere is a perfect shape made by the Gods
Pythagoras

11. 500 BC – Historical ideologies come about
Buddha
Confucius

12. Pre-Historic Time - Pre 500 BC
Motions of the Sun, Moon, & stars are observed
Time and Directions

13. Classical Period – 500 BC to 1400 AD
Philosophers & Togas!
Pagan Religions – Gods & Goddesses

14. Classical Period – 500 BC to 1400 AD
Roman republic developed (510 BC)!
Julius Caesar & Cleopatra

15. So, astronomy was booming….
Earth is round – 300 BC
Shadow on the moon during an eclipse
As travelers continue, they see new stars over the horizon (Aristotle)

16. Classical Period – 500 BC to 1400 AD
Pagan religions are fading & Judaism & Christianity becoming popular

17. 280 BC - Measured the dimensions of the Solar System (Aristarchus)
Relative sizes of the planets
Mercury – Saturn
Heliocentric Model
Sun-centered

18. Size of the Earth – 195 BC

19. So, what explains this? Ptolemy – 300 AD
Geocentric model where planets traveled in epicycles around the Earth

20. Retrograde motion : some planets appear to move backwards then forwards again

21. Classical Period – 500 BC to 1400 AD
Jesus is crucified
Middle Ages – 6oo AD

22. Classical Period – 500 BC to 1400 AD
Vikings – 800 AD
Dark Ages

23. Classical Period – 500 BC to 1400 AD
Separation of Catholic & Orthodox Church – 1050 AD
Henry the 1st King of England – 1100 AD

24. Classical Period – 500 BC to 1400 AD
Black Death – 1350 AD

25. Classical Period – 500 BC to 1400 AD
Measurements of the heavens
Geometry and models to explain motions

26. But, this wasn’t quite right….
….Stay tuned to the Renaissance PEriod