13 Zodiac Signs

Do you know that your zodiac sign is on the apparent path (the ecliptic with twelve constellations) of the Sun across the celestial sphere over the course of the year? Do you know that the Sun was above your zodiac sign when you were born? However, it was already the matter over 2000 years ago. Now, the date of zodiac signs have changed and it is no longer consistent with the astronomical phenomenon.

Due to the change of the earth's axis and the movement of solar system and stars, the current positions of zodiac signs are different with that of 2000 years ago. Since the earth's axis swings in a circle of 26000 years, the ecliptic position also changes in the sky. As a result, the time of the Sun arriving at a constellation would delay about one month every 2000 years. In addition to the twelve zodiac signs, the current ecliptic also spans the thirteenth constellation Ophiuchus which is located between Scorpio and Sagittarius. If you think you are under the Aquarius sign, you might be a Piscean while the original Scorpian might be a Sagittarian. The huge Scorpio also needs to be redesigned, perhaps only including people born on between November 23 and 29 while people born on between November 29 and December 17 should be under the Ophiuchus rather than Sagittarius sign. In 1982, the international astronomical conference modified the constellation range and approved Ophiuchus as the thirteenth onstellation.

NASA New 13 Zodiac Signs and Their Dates

Ophiuchus in Astronomy
Ophiuchus is one of the constellations in the equatorial zone. Looking from the Earth, you will find it south of the Hercules, north of the Scorpio and Sagittarius, and west of the Milky Way. It is the only constellation which connects with another constellation Serpens, also the only one spanning celestial equator, galactic equator and ecliptic. Ophiuchus is huge and wide, just like a rectangle diagonally crossed by the celestial equator. Although it spans a very short range of the Milky Way, the center of the Milky Way is located within the Sagittarius not far from the Ophiuchus, where the Milky Way has a prominent part, forming the broadest area of the Milky Way. Ophiuchus is visible at latitudes between +80° and −80°.

Please click to learm more about  Ophiuchus.

Many people hold a wait-and-see or skeptical attitude toward the legendary 13th zodiac sign: is there really an Ophiuchus zodiac? What is the evidence of its existence?