How many constellations are there? How many constellations are there?

2.65438-0928, the International Astronomical Union officially announced 88 constellations commonly used in the world. According to the different positions of the 88 constellations on the celestial sphere and the appearance of the stars, they are divided into five major regions, namely, the Northern Celestial Constellation, the Northern Celestial Constellation, the Zodiac Constellation and the Southern Celestial Constellation.

3. In the 2nd century A.D., Ptolemy, an ancient Greek astronomer, synthesized the astronomical achievements at that time and sorted out 48 constellations. Connect the main bright stars in the constellation with imaginary lines, imagine them as images of animals or characters, and give them appropriate names in combination with fairy tales. This is the origin of the constellation name. Most of the 48 constellations in Greek mythology live in the northern sky and north and south of the equator.

4. North Celestial Constellation: Ursa minor, Ursa major, Cassiopeia, Draco, Cepheus.

5. Polaris constellation: Scorpio, Andromeda, Deer Leopard, Auriga, Canis Canis, Fox, Cygnus, Little Leo, Perseus, Shepherd, Five Immortals, Rear Left, Northern Corona, Tmall, Lyra, Dolphin, Pegasus, Triangle and Arrow.

6. Zodiac: Cancer, Aries, Gemini, Aquarius, Virgo, Leo, Taurus, Pisces, Capricorn, Scorpio, Libra and Sagittarius.

7. Twelve constellations: Sagittarius, Canis, Eagle, Ophiuchus, Ophiuchus, Sextant, Ophiuchus, Unicorn, Orion and Whale.

8. Southern Constellation: Temple of Heaven, picture frame, flies, mountain case, India, Tian Yan, flying fish, long ruler, swordfish, clock, cuckoo, southern triangle, compass, dragonfly, telescope, Aquarius, southern cross, phoenix, peacock, south pole and compass.