Question

Explain why the planets do not twinkle?
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Answer 1

Answer :

Planets are much closer to the earth and are seen as extended sources. So, a planet may be considered as 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 average out to be constant. Thereby, planets appear equally bright and there is no twinkling of planets.

Hope it's helpful !!!!!!

Answer 2

because they are non-luminous