How many constellations are there in a * * * and why?

According to the regulations of the International Astronomical Association, the whole day is divided into 88 constellations, so there are specific numbers instead of countless ones. Even the stars can only be seen with the naked eye. Of course, there are more than 4,000 in each hemisphere, which is not countless. Are some people upstairs who have no astronomical literacy integrating?

The origin of 12 constellation and 88 constellation

Constellation 88: In ancient times, people connected the scattered stars in the sky through imagination in order to facilitate navigation and observe the astronomical phenomena. Half of them were named in ancient times, and the naming method was based on the myths and forms of ancient civilizations (including the myths and epics of Mesopotamia, Babylon, Egypt and Greece). The other half (mostly in the night sky in the southern hemisphere) was named only in modern times, and is often named after navigation instruments. In ancient times, because of different regions, the way of "Lianliankan" was different! Now the world has unified the constellation map into 88 constellations and divided the sky into 88 regions.

12 constellation: what we usually call "constellation" refers to "sun constellation"; That is to say, people on the earth are the center, and at the same time, we can see which constellation the sun is in orbit (Greek zodiac: meaning ~ circle made by animals, also known as "zodiac"), so we can say what constellation that person is. More than 2000 years ago, the Greek astronomer Hipparchus (190 ~ 120 BC) divided the ecliptic into twelve segments, with spring divided into zero, and every 30 degrees from the vernal equinox (that is, the zero degree of the ecliptic) as a palace, taking the main constellations contained in each palace at that time. There are twelve constellations in all. Babies born when the earth moves to every fraction (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. But these constellations do not represent a certain "star", but can only be regarded as "representative symbols of the same name".

** * Aries

* * * Centaur

* * * Aquarius

* * * North Corona

* * * Bojiang

* * * Flight seat

* * * jackal

* * * Long snake

* * * bottom

* * * sail

* * * Stern

watchdog

* * * Bear

* * * Carving tools

* * * Rhododendron

* * * shield

* * * Flying Horse

flying fish

* * * Phoenix

* * * Dolphin

* * * Fall behind

* * * Fox

* * * frame

* * * pump

* * * swordfish

* * * * Taurus

* * * Whale

* * * Ruler

* * * Grand Jue

* * * Viper

* * * Cancer

* * * Peacock

* * * Orion

* * * hound

* * * sextant

* * * Lubao

* * * compass

** * Capricorn

** * Mu Fu

* * * Antarctica

* * * Southern Corona

* * * South Triangle

* * * Southern Cross

* * * South Fish

* * * Kirin

* * * people

* * * triangle

* * * Mountain case

* * * Snake Man

* * * Lion

* * * clock

* * * Maid

* * * Pisces

* * * Gemini

* * * Water snake

* * * Libra

* * * Swan

** * Tian Ge

* * * Crane

* * * Sky Arrow