How are the twelve constellations determined?

1, the twelve constellations, namely the zodiac, are astrological areas that describe the sun passing through the zodiac on the celestial sphere.

2. More than 2000 years ago, the Greek astronomer Hipparchus (190 ~ 120 BC) divided the ecliptic into 12 sections, divided it into 0 in spring, and made it a palace every 30 degrees from the vernal equinox (i.e., zero degree of the ecliptic). There are twelve constellations in all.

3. Babies born when the earth moves to every bisector (constellation) will always have some similar characteristics when they grow up, including behavioral characteristics. By connecting these associations (rich imagination and creativity) in series, these constellations are visualized; It also adds the color of myth and becomes an important part of culture (mainly Greek and Roman mythology). This set of numerology has been developed and circulated for at least five thousand years, represented by these twelve constellations respectively.