Start Chapter 3: Cycles in the Sky
Motion of the Sun through the year
–Plot position of Sun relative to stars, over one full year.
•Complicated by fact you can’t see Sun and stars at same time.
•Once you have full map of sky, you can work this out by seeing what stars are opposite sun 12 hours later.
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•Path of sun around the celestial sphere is called the ECLIPTIC
•Set of constellations through which it passes is called the ZODIAC
(From our Text:  Horizons, by Seeds)