why do stars appear twinkling
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The stars seems twinkling because of the gases burning.This seems to be twinkling as we are very far from stars.
shivani19611:
no it's because of atmospheric refraction
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The twinkling of stars is due to atmospheric refraction of starlight. As the starlight from the star enters the earth's atmosphere it undergoes refraction due to varying optical densities of air at various altitudes. The continuously changing atmosphere refracts the light by different amounts. In this way starlight reaching our eyes increases and decreases continuously and the star appears to be twinkling at night.
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