Question

why do stars twinkle?​

Answer 1

Explanation:

• Stars twinkle because of turbulence in the atmosphere of the Earth.
• As the atmosphere churns, the light from the star is refracted in different directions.
• This causes the star's image to change slightly in brightness and position, hence "twinkle."

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Answer 2

Heya Mate,

Here is ur answer

Stars twinkle because the star light reaching our eyes increases and decreases continuously due to atmospheric refraction. Light from a star travels first in vacuum, and then enters into the Earth's atmosphere.

As optical density of air increases towards the surface of the Earth, the light from the star travels from rarer to denser layers, bending every time towards the normal. Moreover, different layers of atmosphere are mobile. The temperature and optical density of layers of the atmosphere changes continuously. Therefore, apparent position of the star and amount of light from the star reaching our eyes, both change continuously. This leads to the twinkling of stars.

Hope it helps.

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