Part 1 describes the movements of the earth in relation to the sun. This also explains how and when the spring and autumn equinox occurs.
Part 2 describes the movements of the stars in relation to the earth. This also start's to explain the precession of the equinox and the Zodiac calendar.
Part 3 describes how the various movements of the sun and the earth and the stars all form the precession of the equinox and the ancient Zodiac calendar.
Part 4 includes some research on the 3 Ages and what the term and word age actually represents. For example, the age of Pisces and Aquarius ETC.