Physical Science

1. %

3. %

4. %

5. %

9. %

10. Astronomy
is a very
old science

11. BABYLONIANS (1500 B.C)
Positions of Planets
Calendars
Eclipses
Astronomical Records

12. Greeks (500
BC)
• Cosmological
Framework
• Navigation
• Earth was
Spherical

13. Aristarchus
(310 – 320 BC)
- Proposed the HELIOCENTRIC
THEORY because he observed
Sun was relatively larger than the
Earth.

14. Eratosthenes
- Measured the
circumference of the Earth

16. PTOLEMY
• Popularized the GEOCENTRIC THEORY from
Aristotle.
• Explained Deferents and Epicycles.

17. Islamic
Astronomers
contributed in naming stars.
Terms like
- Zenith
- Alidade (Quadrant)

18. Then, there comes
a revolution …
•What tool can cause
astronomers to
observe the space
more?

19. Hans Lippershey
Inventor of the first CRUDE REFRACTING TELESCOPE (1608)

20. NICOLAUS COPERNICUS
(1473-1543)
- Set forth the idea of a
heliocentric solar system
which the Vatican did
not agree with

21. Galileo Galilei
(1564-1642)
• Created his own
telescope
• Observed phases of
Venus
• Moon Craters
• Moons of Jupiter
• Sunspots