Lecture 1: INTRODUCTION and HISTORICAL PERSPECTIVE

I. HISTORICAL PERSPECTIVE

A. Ancient Peoples/ Calendars
B. Pythagoras: Spherical Earth
C. Aristotle: Earth at Center
D. Aristarchus: Sizes of the Moon and Sun
E. Eratosthenes: Size of the Earth
F. Hipparchus: Star Maps and Precession
G. Ptolemy: Planetary Motions

II. The CELESTIAL SPHERE

A. North Celestial Pole
B. North Star
C. Zenith and Meridian
D. Celestial Equator
E. The Ecliptic
F. The Zodiac
G. The Rising and Setting of Stars
H. Origin of the Constellations

III. The SEASONS

A. Spring Equinox - March 21
B. Summer Solstice - June 22
C. Autumn Equinox - September 23
D. Winter Solstice - December 22

IV. ECLIPSES

A. Solar Eclipse






B. Lunar Eclipse