Question

What is the reason for the twinkling of stars?

विकल्प

•  Explosions occurring in stars from time to time

• Absorption of light in the earth’s atmosphere

• Motion of stars

• Changing refractive index of the atmospheric gases

Answer 1

Changing refractive index of the atmospheric gases.

Explanation:

1. Without sunshine, stars can be seen at night because they are self-luminous.
2. They seem to be point sources because of their great distance from us.
3. The movement of atmospheric air causes the star's apparent position to fluctuate slightly over time.
4. As a result, the air's refractive index is constantly fluctuating.
5. As a result of this shift, the star's brightness and position constantly shift, giving the impression that it is sparkling at night.