Question

explain why do stars twinkle and planets do not? ​

Answer 1

Answer:

stars are pt. sized objects of light and when light entering the earth's atmosphere it experiences refraction due the which light bends at different points due to which stars twinkle.

planets are closer to us due to which the light bending is not clear due to which planets do not seem to twinkle.

Answer 2

Explanation:

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