Can anyone tell me the life of a star in a brief account of the life of a star

Stars of different mass, similar to the Sun, are produced from nebulae, and eventually become white dwarfs, and those that are larger than the Sun become neutron stars, and those that are much larger become black holes, I don't remember exactly

Supernova**.

Fixed star. Red giant.

White dwarf.

As with people, birth, glow, and death.

Many stars are born in the universe every moment - a lifetime of stars.

Everything in the world has life, and so do stars, and although their lives are long, they cannot be eternal. Lack of coarseness.

Little stars: Let's take a look at the changes in the lives of small stars, some of them are smaller than our sun, some are slightly larger than our sun, small stars have enough hydrogen to burn for 10 billion years, and half of our sun's fuel has been used.

How much light and heat a star can release depends largely on how much weight it consumes in its conversion from hydrogen to helium. Our sun loses an average of 4 million tons of body weight per second!

When the hydrogen is about to burn out, the center of the star will shrink and become hot, but the outside will expand and cool, and such stars are usually large and red, and are called red giants. Its diameter is generally about 300 million km, and the diameter of the red superstar is about 500 million km.

The red giant will not be around for too long, and it may become a nova again, or it may gradually change back into a hot air mass wrapped in gas, becoming a k "planetary nebula" (by the way, the planetary nebula is a very vague concept, it does not have a boundary with the planet at all).

Soon there will be a core left, this is a white dwarf, it is small but very heavy, a white dwarf as small as a cup, it may weigh about it, and it is hot, but it is not bright at all.

Eventually, it will be cooler, it will be darker, and it will be too small, too dark, too far away for us to see it, and we won't even know if there is such a long time in this 15 billion year universe.

Big stars: Large stars about twice as big as the Sun are formed in different ways. It burns hydrogen relatively quickly, and it will burn out in millions of years, becoming a "red giant".

When the fuel is burned, it stops and disappears. into a substance the size of a tea pot. He weighs at least 10 billion tons and has a temperature of up to 100 billion degrees. Then it will break into pieces and become a "supernova".

When a supernova dies, it will become a neutron star with a diameter of about 20 km, and it has a lot of gravity, and a person can weigh up to 5 billion tons there. It emits radio waves, which is why it is also called a pulsar. The pulsar will slow down, then stop and disappear.

Huge stars:

If a star is more than three times larger than the Sun, then things will be even more unusual.

It consumes all its fuel and turns into a supernova. And then it keeps shrinking, shrinking ......

Eventually, it shrinks, invaginates, causes the fission time of the internal atoms to stop, and produces a most special substance that, although only a few kilometers in diameter, weighs more than a neutron star, which is a black hole.

In the universe, there are many stars born at every moment, and Peez-stellar is born for the rest of a lifetime.

The evolution of stars can be roughly divided into the following stages:

1. The main sequence is the stage before the circle The star is in its infancy.

2. The main sequence is the star phase Stars are in their prime.

3. Red Giant Collapse Stars are in middle age.

4. Pre-combustion white dwarf stage Stars are in old age.

Most stars spend their lives in this way.