Question

why do stars twinkle​

Answer 1

Answer:

stars twinkle due to the refractive index of the atmospheric gases keep changing continuously due to which they seems to be twinkling and moving a little bit

Answer 2

Explanation:

Stars twinkle due to atmospheric refraction of starlight. As the stars are very far away, they behave as almost point sources of light. A son account of atmospheric refraction, the path of rays of light coming from the star goes on varying slightly, the apparent position of the star fluctuates and the amount of starlight entering the eye flickers. So, sometimes, the star appears brighter and at some other time, fainter. Thus, the stars twinkle.