Why do stars twinkle?

Dear Student ,
Light coming from the stars travel a long distance and reach us after travelling through several layers of the atmosphere which vary in temperature and density .Due to refraction through these different layers of the atmosphere gets bent due to this reason stars seem to twinkle .If they viewed from outer space you won't see the stars are twinkling anymore .

Hope this helps you .

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Stars do not really twinkle, they just appear to twinklewhen seen from the surface of Earth. The stars twinklein the night sky because of the effects of our atmosphere. When starlight enters our atmosphere it is affected by winds in the atmosphere and by areas with different temperatures and densities.
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