How many constellations are there on the celestial sphere? How many are in Beitian? How many are there in Nantian? How many eclipses?

If the vast universe is regarded as a celestial sphere, then the 88 constellations in the universe divide the whole celestial sphere into two parts: the northern celestial sphere and the southern celestial sphere. According to the fact that most of each constellation is in the northern sky or the southern sky, it is called Polaris or South Star respectively. According to this classification, Polaris has 28 constellations, South Star has 48 constellations, and the ecliptic has 12 constellations. The ecliptic passes through 13 in 88 constellations. Except for a small number of Ophiuchus, from the Pisces where the vernal equinox is located, they are Pisces, Aries, Taurus, Gemini, Cancer, Leo, Capricorn, Libra, Scorpio, Sagittarius, Capricorn and Aquarius, which are collectively called the zodiac signs. The names of the zodiac have indeed undergone many changes, many of which are related to myths, and most of them are named after animals.