Question

What causes the twinkling of stars at night?

Answer 1

Causes of the twinkling of stars at night:

1. Stars twinkle because of the atmospheric refraction of starlight.
2. The atmosphere is made up of several layers.
3. The refractive indices are constantly changing as a result of the star's light rays changing their path.
4. Stars are too far from us so the light has to get refracted multiple times until it reaches us. This is the cause of the twinkling of stars.