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Questions
Explain why the planets do not twinkle.
Explain why, the planets do not twinkle at night.
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Solution
Planets are much closer to the Earth and are seen as extended sources. So, a planet may be considered a collection of a large number of point-sized light sources. Although light coming from individual point-sized sources flickers but the total amount of light entering our eye from all the individual point-sized sources averages out to be constant. Thereby, planets appear equally bright and there is no twinkling of planets.
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