An excerpt from Yesterday's Sky Chapter 5
THE ASTRONOMY OF THE LUNAR NODES
If you are a nerd, welcome to paradise. If you slept through science, but were wide-eyed when English class turned to the Romantic poets, you will probably make a very fine astrologer—but you might want to skip this chapter.
So, what exactly are the nodes of the Moon? Obviously, they are not planets. Since they are the foundation of Evolutionary Astrology and the gateway into karmic analysis, let’s take a little while to understand them rigorously.
Earth orbits the Sun, but since we are sitting on the Earth, it doesn’t look that way. For millennia, our ancestors assumed it was the other way around—that the Sun orbited the Earth. Since astrology is Earth-centered, we stick with that visual illusion in our language and perspective. What we actually see is that the Sun circuits the same band of constellations each year. Astrologers call that band the Zodiac. Astronomers call it the Ecliptic.