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Circle of Animals

12 of the official constellations, known as the Signs of the Zodiac, are along the Sun's path, so we say that on any given day the Sun is "in" a certain constellation. We of course cannot see the constellation that the Sun is in because the Sun's light is too bright. Animal circle (黃道 12宮)

The sun relative to the stars (10 days/frame →).

Spring Constellations | Summer Constellations | Fall Constellations | Winter Constellations | Earth's Orbit

Diagram of the Zodiac with the Sun in Libra Celestial sphere

The Age of Aquarius

Excerpt from Julie Gillentine's article

Astronomically an age is defined by the constellation which provides the back drop for spring equinox sunrise in the northern hemisphere. Earth wobbles on her axis of rotation, causing spring equinox sunrise to inch backward through the solar sequence of constellations. There are 12 ages, one for each zodiacal constellation [spanning 30°], "precessing" from Pisces to Aries at the rate of 1° in 72 years, and delineating the passage of a Great Year of [72×360=] 25,920 years. Dividing by 12 each age lasts roughly 2,160 years .

At present the equinox sunrise straddles the modern boundaries of Pisces and Aquarius, and the stellar backdrop is the omega star in the constellation of Pisces. As the backward march shifts, the "dawning of the Age of Aquarius" will be heralded as this constellation moves to center stage and defines the new world age.

But when will the eonian changing of the guards occur? Astrologers differ on when the momentous dawning will occur, and some sources believe the new age has already begun. If the duration of an age is 2,160 years, and we know the starting point, then the answer is simple arithmetic. However, we don't know for certain when the age of Pisces began, and there are conflicting opinions. Is the duration of an age uniform like an astrological sign, or is the length based on the breadth of the constellation? Constellations are not uniform in size. Perhaps the ages are defined by heliacal (before the sun) risings of certain fixed stars.

Precession of the Equinoxes

Precession of the north pole axis (Opposite to its direction of rotation, period 25,800 (26,920) years.) The precession is determined by the wobble of the earth which is caused by many factors. The exact precession cycle is difficult to determine.	blue: equatorial disk green: ecliptic plane red: north pole white: equinoxes (Equinox line intersects the sun twice a year.) Vernal equinox rotates 0.014°/year; 359.986° ↗ revolution of the Earth makes up a year. The Earth 'looses' an entire year in 25,800 years, or a day in about every 71 years.	Vernal equinox dawns Aquarius (starts about 2650 A.D.) (VE takes 25,800 years to transit all 12 ages.)
Additional Links Born Under Ophiuchus Introduction: The Precession Paradigm Time Equivalence of the Tropical Year and the Sidereal Year The Mathematical Problem of the "Precession-Time Paradox"

Circle of Animals
12 of the official constellations, known as the Signs of the Zodiac, are along the Sun's path, so we say that on any given day the Sun is "in" a certain constellation. We of course cannot see the constellation that the Sun is in because the Sun's light is too bright. The sun relative to the stars (10 days/frame →).
Spring Constellations \| Summer Constellations \| Fall Constellations \| Winter Constellations \| Earth's Orbit