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Originally Posted by glsammy  It IS caused by the atmosphere, but Weathergirl was also right. The intensity of the starlight is much greater, hence the tendency to twinkle. As the light from the Planets is only reflected light, it doesn't.  |
Don't understand this argument, glsammy. I always believed that stars twinkled because they were points of light, and the atmosphere 'shimmer' could divert the light easily. Planets are discs of light, with a much greater diameter, and so the 'shimmer' doesn't affect them in the same way.
henrya