why do stars twinkle
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As a star’s light penetrates the Earth’s atmosphere, every individual stream of starlight is refracted – caused to change direction, slightly – by the various temperature and density layers in Earth’s atmosphere. You might think of it as the light travelling a zig-zag path to our eyes, instead of the straight path the light would travel if Earth didn’t have an atmosphere.
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They are bright balls of gas
Explanation: Stars do not really twinkle but they do shine because they are bright but we say twinkle to go with the nursery song i guess
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