The star in the universe is actually an ordinary star. All the stars in the universe will glow by themselves, and so will the stars. It hangs in the universe like a small lamp, so it is on and doesn't flicker. When people see stars on the earth, they will twinkle, which is actually related to the earth's atmosphere.
The earth's atmosphere is divided into five layers. The atmosphere is not moving, but fluctuating with the change of temperature. The light of the stars leaves the earth from the universe for our naked eyes to see.
Stars need to pass through the earth's thick atmosphere, which is vibrating. After several refractions, we saw the light of the stars. It is because of this unstable atmosphere that the stars wink at us.
Extended data
The brightest planet:
On the earth, human beings can see five planets with naked eyes, of which Venus is the brightest. Although Venus is not as bright as the sun and the moon, it is 14 times brighter than the famous Sirius (the brightest star except the sun in the whole day), just like a dazzling diamond.
Venus is not only bright, but also has a "personality". It is the only big planet in the solar system that rotates in the opposite direction to other planets, from east to west. Therefore, on Venus, the sun rises in the west and sets in the east.