Question

what is twinkling of stars caused due to?​

Answer 1

Answer:

The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth's atmosphere, undergoes refraction continuously before it reaches the earth. The atmospheric refraction occurs in a medium of gradually changing refractive index.

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Answer 2

Answer:

The twinkling of a star is due to atmospheric refraction of starlight.

Explanation:

The starlight, on entering the earth's atmosphere, undergoes refraction continuously before it reaches the earth. The atmospheric refraction occurs in a medium of gradually changing refractive index.