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We see the stars twinkling due to refraction so why doesn't moon and other heavenly...

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rnk | Student, Grade 10 | Honors

Posted May 31, 2011 at 8:14 PM via web

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We see the stars twinkling due to refraction so why doesn't moon and other heavenly bodies seem to twinkle like the stars?

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govindan | College Teacher | eNoter

Posted June 1, 2011 at 12:31 AM (Answer #1)

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We see the stars twinkling due to refraction because they are far away, of the order of millions and millins of km from the earth. There is flutcuating density difference in the medium in between the earth and the stars and hence refracted ray through this will constantly change its position and we have the feeling of twinkling.

But moon and other heavenly bodies like planets are relatively closer to us and there is no appreciable  flutcuating density difference in the medium in between so that refracted ray through this will not change position and hence will not seem to twinkle like the stars.

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