Question

explain why the planets do not twinkle .​

Answer 1

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. Thereby, planets appear equally bright and there is no twinkling of planets.

Answer 2

Explanation:

Due to the planets' apparent closeness to Earth, the light coming from these celestial bodies does not bend much due to Earth's atmosphere. ... Therefore, the light coming from our solar system's planets does not appear to twinkle like stars.