How many constellations are there in the universe _ How many constellations are there in the universe 324

How many constellations in the universe have names?

The whole day is divided into 88 constellations, all with names.

Constellation refers to a group of similar stars projected on the celestial sphere. The International Astronomical Union accurately divides the whole day into 88 constellations. There are five polar constellations in the northern sky (such as Ursa minor, Ursa major and Cassiopeia), Polaris has 19 constellations (such as Andromeda, Auriga, Cygnus, Perseus, Capricorn, Lyra and Pegasus), and the ecliptic has 12 constellations (such as Aries, Gemini and Pegasus)

Planets can only see the five planets in the solar system, namely Mercury, Venus, Mars, Jupiter and Saturn. Other planets also have names, but they are invisible to the naked eye, such as Uranus, Neptune and Pluto. Among other planets in the solar system, the larger ones have names, such as Ceres, Vesta, Vesta, Poseidon and Venus. Some smaller asteroids also have names, such as Yuzhe Zhang and Chen Jiageng. But because there are too many asteroids, many of them are only numbered or temporarily numbered. The names of satellites are basically the same.

The stars you can see at night are basically stars, and they are all stars in the Milky Way. There are about thousands of stars in the Milky Way with names. In systematic naming, the stars in a constellation are generally named by Greek letters according to their brightness, such as "Eagle Alpha (Chinese names Hegu II and Altair)", "Dog Alpha (Sirius)", "Lyra Alpha (Vega)" and the Big Dipper (each with its own name). If there are too many stars and not enough Greek letters, name them with numbers, such as "Virgo 6 1".

With the development of observation technology, many stars in extragalactic galaxies can also be seen, but basically only a few stars in special extragalactic galaxies have names, usually numbers.