Why isn't the Orion constellation included in the Zodiac?

Because Orion is not on the path of the ecliptic, which is the Sun's apparent motion through the constellations. The zodiac signs are named after constellations on the ecliptic. read more

The constellations of the Zodiac are the ones that, from the perspective of the earth, the sun moves “through” with the seasons. The constellations of the zodiac are located on a band called the “ecliptic.” read more

It's very prominent in the night sky and the 3 belt stars make it easy to spot. You'd think that, when the Zodiac was being made, Orion would have been one of the 12 signs. read more

Why the Constellation of Ophiuchus was Not Included in the Zodiac By Mark Lerner Back in January of this year, an astronomer and professor in Minnesota (Parke Kunkle*) gave an interview to a reporter at the Star-Tribune newspaper in which he tried to disparage Western Astrology. read more