Explain why the planets do not twinkle.
The planets are at a lesser distance from us as compared to the stars.
We know that planets do not have their own light. They reflect the light of the stars falling on them.
Since the planets are closer to us, they appear much bigger and the light appears to come from more than one point.
Dimming effect of some of the points of light coming from planet is nullified by brightening effect of light coming from other points.
Hence, planets do not twinkle.