why do we start twinkle?
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Star twinkle due to atmospheric refraction. When the light of stars enter the earth atmosphere at in one moment it's light is dim and the next moment it's light is bright so the stars twinkle
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Stars twinkle due to atmospheric refraction of starlight. As the stars are very far away, they behave as almost point sources of light. A sun 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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