Question

Why do star twinkle?explain ​

Answer 1

Stars twinkle because of turbulence in the atmosphere of the Earth. As the atmosphere churns, the light from the star is refracted in different directions. This causes the star's image to change slightly in brightness and position, hence "twinkle."

Answer 2

star has their own light

when the light enter the atmosphere of the Earth, due to turbulence in the atmosphere and change in the medium the light ray get reflected and when we see it, due to this reason the stars appear to be twinkling