What are some of the stars called? What are stars?

What does it mean, does it mean by name, Big Dipper?Don't understand.

Star xīngxīng (1) A shimmering celestial body in the night sky.

2) [tinyspot] Small, small bits. Astronomers usually divide the ability of stars to shine into 25 magnitudes, with the strongest ones being about 10 billion times different from the worst ones. The brightness of a star is often expressed in terms of magnitude.

The brighter the star, the smaller the magnitude. The magnitude measured on Earth is called the apparent magnitude; A magnitude that is attributed to a distance of 10 parsecs from the Earth is called an absolute magnitude.

Shiny and shiny, 10,000 lights. Light up the sky and fill the galaxy.

It's the stars. There are no stars in animals and zodiac signs.

The Chinese zodiac is a combination of 12 animals in China and the 12 earthly branches that match the year of birth of a person, including the rat, ox, tiger, rabbit, dragon, snake, horse, sheep, monkey, rooster, dog, and pig.

The origin of the zodiac is related to animal worship, and each zodiac has a rich legend, and has formed a conceptual interpretation system, which has become an image philosophy in folk culture, such as the zodiac and natal year in marriage.

There are different opinions about the origin of the 12 zodiac signs, but here are the folklore stories and animal habits that I heard when I was a child

1. Write about a legend you heard when you were a child

Legend has it that in order to select the 12 zodiac signs for the year, God decided to start a zodiac race among the animals, starting with the order in which the animals arrived, and taking the top 12 as the ranking of the 12 zodiac signs. On the day of the race, the slick rat hid on the cow, and suddenly sprinted near the finish line, winning the first place, and the cow arrived behind the rat and came second. Tigers, rabbits, dragons, snakes, horses, sheep, monkeys, chickens, dogs, and pigs arrive at the end in turn, so there are 12 zodiac signs.

2. There is also a saying that it is based on animal habits

According to the twelve hours of day and night and animal habits.

Rats (23:00-01:00) Rats are most active late at night.

Cattle (01:00-03:00) Cattle ruminate and chew at this time.

Tiger (03:00-05:00) At this time, the tiger is the most ferocious in the day and night.

Rabbit (05:00-07:00) At dawn, rabbits come out of the nest to graze.

Dragon (Tatsuki 07:00-09:00) It is easy to fog up at this time, and legend has it that dragons like to ride the clouds.

Snake (09:00-11:00) The sun is shining, and the snake comes out of the hole to feed.

Horses (11:00-13:00) Horses like to run around and neigh.

Sheep (13:00-15:00) When it is good to herd sheep, the sheep come out to graze.

Monkey (15:00-17:00) The sun is in the west, and monkeys like to come out and cry at this time.

Chicken (17:00-19:00) When the sun sets, the chicken returns to its nest.

Dog (19:00-21:00) When it gets dark, the dog looks after the home and cares for the home.

Pig (21:00-23:00) In the dead of night, the sound of a pig arching trough is heard.

The stars that we can see are called stars, which are spherical or spherical objects that emit light on their own, made up of hot gas. The closest star to Earth is the Sun. The second is Proxima Centauri, which emits light that takes years to reach Earth.

Stars are all gas planets. On clear and moonless nights, and in areas without light pollution, the average person can see more than 6,000 stars with the naked eye. With the help of telescopes, hundreds of thousands or even millions of them can be seen.

It is estimated that there are about stars in the Milky Way.

1. 200 billion. Stars are not immobile, but because they are too far away from us, it is difficult to detect changes in their position in the sky without the help of special tools and methods, so the ancients thought they were fixed and immobile stars, called stars Most astronomers now believe that stars are created by the gravitational collapse of thin gas clouds and dust. The gravitational pull of these gas clouds and dust is closely related to the lifetime of the star, in other words, the initial mass of the star affects its evolutionary direction, age, and eventual death.

Massive stars evolve much faster than smaller-mass stars. Stars with masses greater than 8 solar masses usually last their lifetime in the form of supernova explosions. The birthplace of stars is often thought to be in those interstellar gases.

When the density of these interstellar gases exceeds a certain threshold, the mutual gravitational pull between the gases will gradually exceed the pressure of the gases, so that the interstellar gases will begin to shrink and the density will continue to increase. Because the mass of interstellar gas is so large, the density increases and the interior of interstellar gas becomes more and more unstable at the same time. This results in the formation of some of the smaller gas masses.

Over time, these small gas clumps will slowly evolve into stars. So, it seems to us that stars are born in clusters. These stars produced by slowly rotating spheres formed by gas and dust, the astronomical community has come up with a recognized image of birth.

However, the details are not yet clear, especially in the later stages of the collapse, that is, a clear theory of planet formation, which has not yet been clearly answered. But the advent of giant infrared telescopes has made it relatively easy for astronomers to study. Because electromagnetic waves have much longer wavelengths in the infrared band than in the optical wavelength, infrared telescopes allow us to clearly see the interior of the birthplace of stars, which are full of gas and dust.

Stars are all stars, the same as the sun, and the temperature above them is scary, so they don't contain anything solid. Because the stars are so far away from us than the sun, they look small and not so dazzling.

Regardless of asteroids, large planets can be divided into rocky planets and gaseous planets, rocky planets are mostly found in the inner side of star systems, and gaseous planets are mostly found on the outer side, and they are usually larger in volume and mass than rocky planets.

The composition of rocky planets is similar to that of Earth, with an iron core inside.

The main components of gaseous planets are hydrogen and a certain amount of helium, and the content of metallic elements (astronomically all elements except hydrogen and helium) is very small, and the interior is a metallic hydrogen.

Hydrogen forms a metal-like state at extremely high pressures).

If the Earth, Mercury.

Planets such as Venus, Mars and the Moon.

Their cores are generally sulfides of metallic substances such as iron and nickel. If it's Jupiter.

The core of Saturn, Uranus and Neptune is generally metallic hydrogen, a conductive fluid with metallic properties at high pressures.

Expansion: What the universe is made of:

Originally, the universe had no matter, just a high-density mass energy (i.e., dark matter.

When the energy is large, the energy quickly diverges and expands, and a part of the energy collides to produce a vortex (Kármán vortex), and the rotating energy is the particle, from which the matter is born. The unspun energy continues to dissipate, which is dark matter (also dark energy.

Stars have multiple meanings, one refers to the stars in the universe visible to the naked eye, the second refers to the poem named Star, the third refers to Zhang Jie's fans collectively refer to the star, and the fourth refers to the movie named Star. The activity of the energy inside the star makes the star irregularly shaped. However, the stones of the mountains are rolled down from a high place by the gravitational pull of the stars (gravitational pull), and the rivers carry the sediment from the high ground to the low-lying ocean.

The stars we see are actually called stars.

To put it simply, stars are sun-like celestial bodies that burn themselves and glow with heat and light, also known as stars.

A star is a planet, and each star represents one, some of which are water, minerals...

Stars are called celestial bodies, and the interior of celestial bodies is made up of soil and various metals.

Inside the stars is the moon, because "the moon stays in my star."