Astronomy 100 -- Early Astronomy



"EARLY ASTRONOMY"

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MESOPOTAMIAN ASTRONOMY


ARGUMENTS AGAINST A MOVING EARTH


Fix Figure 3-13


ARISTOTLE [384 - 322 B.C.]

PROOFS OF A ROUND EARTH


ERATOSTHENES [276 - 195 B.C.]

THE SIZE OF THE EARTH


Fix Figure 3-14


ARISTARCHUS [310 - 230 B.C.]

SIZE OF AND DISTANCE TO THE MOON


Fix Figure 3-09

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SIZE OF AND DISTANCE TO THE SUN


HIPPARCHUS [around 135 B.C.]

Fix Figure 3-15

Are we in the "Age of Aquarius?


PTOLEMY [around 140 A.D.]

PTOLEMAIC (Geocentric)
MODEL FOR THE SOLAR SYSTEM

RETROGRADE MOTION OF MARS!

Mars in retrograde in early 2010.

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These "retrograde loops" do not always look the same!

Fix Figure 2-28

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Fix Figure 3-17

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THE PTOLEMAIC SOLAR SYSTEM


Fix Figure 3-18



Lunar and Solar Eclipses

The Astronomical Revolution

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