Why the stars blinking?

The stars in the sky are blinking because their light must penetrate the atmosphere to protect the earth, which always fluctuates in temperature and density. Picture 1 of Why the stars blinking?

On bad nights, stars look like they are constantly moving because their light is refracted in one direction or another. The scene looked like watching a dancing coin at the bottom of the water.

Astronomers avoid this flicker by using a special telescope, which consists of many small mirrors that are continuously adjusted to match the disturbance in the atmosphere.

MT