Explain why do stars twinkle and planets do not?
Answers
because stars are luminous which emit light and that light when it enters earth's atmosphere it undergoes refraction so it looks twinkling and we can see that from a very far place.
planets are non luminous which do not emit light so we can't see them.
Hey mate!! Here is ur answer
Stars twinkle due to atmospheric refraction of starlight. As the stars are very far away, they behave as almost point sources of light. As on 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 startlight entering the eye flickers so sometimes the star appears brighter and add some other time fainter. Thus the stars twinkle.
Planets are much closer to the earth and our Seen as extended light source. So planet may be considered as a collection of large number of points sized light sources 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 plants appear equally brighter and there is no twinkling of planets.
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