#precession
4 articles
Precession of the Equinoxes and the Great Year
Precession of the equinoxes is the slow wobble of Earth's axis that completes one circle in about 25,772 years, the Great Year. It moves the equinox point westward and is the reason the tropical and sidereal zodiacs drift apart.
The Age of Aquarius: What It Really Means
The Age of Aquarius is one of the astrological ages, the roughly 2,150-year periods produced by the precession of the equinoxes, as the spring equinox slowly drifts from Pisces toward Aquarius.
The Ophiuchus Myth: Is There a 13th Zodiac Sign?
Every few years a headline claims NASA added a thirteenth zodiac sign, Ophiuchus. It is misleading: tropical astrology uses twelve equal seasonal signs, and NASA never changed the zodiac.
Sidereal vs Tropical Zodiac: Why Your Sign Can Differ
Western and Vedic astrology use two different zodiacs, which is why your Sun sign can change between them. Here is what sidereal and tropical mean, why they drift apart, and why neither is wrong.