What are the zodiac signs?

Everyone has met a saint. Let's talk about what the zodiac is first.

Babylonians observed these constellations for a long time, determined the ecliptic through observation, and divided the ecliptic into 12 equal parts, each equal part was 30 degrees, which was called 1 segment.

The sun travels around the ecliptic in 12 months/cycle, so it travels on the ecliptic every month 1 segment. In the eyes of the ancients, the sun was Apollo, and its resting place must be a magnificent palace. Therefore, they called the 1 section of the ecliptic 1 palace. In this way, the section 12 on the ecliptic becomes the "zodiac". The name of the zodiac is the same as the 12 constellation near the zodiac.

Aries is the 1 house of the zodiac, followed by Taurus, Gemini, Cancer, Lion, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces. Each constellation spans a range of different lengths, averaging about 30 radians. However, due to precession, the vernal equinox retreats westward for about 50 arc seconds every year. Today, 2000 years later, the vernal equinox has retreated to Pisces, but people still habitually regard Aries as the 1 house of the zodiac, and so does western astrology.