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Why are there stars in the sky?
The stars in the sky are all stars in the universe, and most of them are stars, just like the sun, which will shine. It looks like a point because it is far away from us.

The brightness of a star is usually expressed in magnitude. The brighter the star, the smaller the magnitude. The brightest planet is Venus, the fastest star runs at a speed of over 2.4 million kilometers per hour, and H 1504+65 is the hottest white dwarf.

There are two main factors that determine whether the stars people observe are bright or dark:

First, because of the size of the star's luminous ability.

The second is the distance between stars and people.

The activity of energy expansion inside the data star makes the shape of the star irregular. However, the stones in the mountains roll down from the heights due to the gravity of the stars, and the rivers carry the sediments from the heights to the low-lying oceans (rivers also flow due to the gravity of the stars). These are all examples of concentration to the center, which make the star change from irregular to spherical. If the interior of the star stops moving, it is likely that the star will become a very standard sphere (except for centrifugal force and gravity of other celestial bodies) after many billions of years.

Many asteroids, because of their small mass and low gravity, are generally composed of hard solid rocks, and it is difficult to complete the process of moving to the center under the action of their own gravity, so their shapes are grotesque, oval and rod-shaped. ...

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