Question

why does star twinkling ​

Answer 1

The twinkling of stars is due to the atmospheric refraction of starlight .As the light from the star enters the earths atmosphere , it undergoes refraction due to varying optical densities of air at various altitudes.

The continuously changing atmosphere refracts the light by different amounts. In this way , the starlight reaching our eyes increases and decreases continuously and the star appears to be twinkle at night.

Answer 2

Here is your answer in small in content

STAR twinkles due to atmospheric refraction