why do star twinkle?
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stars actually doesn't Twinkle but seem to Twinkle due to reflection we see the stars from so far so that is why due to the reflection of sun's rays they seem to shine and due to refraction on reaching Earth Day simple Twinkle
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Explanation:
Stars twinkle due to atmospheric refraction of starlight. As the stars are very far away, they behave as almost point sources of light. A son account of atmospheric refraction, the path of rays of light coming from the star goes on varying slightly, the apparent position of the star fluctuates and the amount of starlight entering the eye flickers. So, sometimes, the star appears brighter and at some other time, fainter. Thus, the stars twinkle.
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