Why is zodiac inaccurate?

However, the main reason why astrological signs do not align with the zodiac is an oscillation in the Earth's rotational axis called precession. As a result of its rotation, the Earth bulges slightly at the equator, not unlike how a skater's skirt is fanned as it turns. Unbeknownst to ancient astrologers, the Earth continually wobbles around its axis in a 25,800-year cycle. This oscillation called precession is caused by the gravitational pull of the moon on the Earth's equatorial bulge.

They are collectively called the zodiac and consist almost entirely of figures of animals, such as the ram (Aries), the crab (Cancer) and the lion (Leo). The constellation of Aries spanned the first 30 degrees of the ecliptic; 30 to 60 degrees was Taurus; 60 to 90 degrees was Gemini; and so on for the 12 constellations of the Zodiac. This movement alters the view of the zodiac from Earth, causing the constellations to appear to slide eastward, approximately one degree per human life. Babylonian astrologers, and later the Greeks, originally determined the signs of the zodiac by which constellation the sun was on the day you were born.

However, a phenomenon called precession has altered the position of the constellations we see today and has led to a change in the constellations of the zodiac. Ptolemy used the same names for the zodiac signs as for the constellations, so there is confusion around the horoscope's birth date range. At the heart of the problem lies confusion over the difference between a zodiac sign and a constellation. The science of astronomy is now at odds with one of the basic principles of organization of astrology: the dates of the zodiac.

Early astronomers observed that the sun traveled through the zodiac signs over the course of a year, spending about a month in each. Although the constellations of the zodiac, which date back to Mesopotamia or earlier, may seem definitive, they are only one example of those produced by the various cultures of the world, all of which had their own, often very different notions of how the sky is built. Traditionally, the 12 signs of the zodiac refer to 12 constellations that cross the ecliptic; that is, the apparent trajectory of the Sun in the sky. The following table shows the dates when the sun actually lies within the astronomical constellations of the Zodiac, according to the boundaries of modern constellations and corrected for precession (these dates may vary from day to year).

But starting last Friday, news began to spread that NASA was behind a plan to change everyone's zodiac sign However, the main reason why astrological signs do not align with the zodiac is an oscillation on the Earth's rotational axis called precession. In short, as you will see below, your zodiac sign is not what you think it is, and your corresponding horoscope cannot be right.

Damian Pestano
Damian Pestano

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