Question

why stars twinkle wheres planets do not?

Answer 1

Stars twinkle because they appear as tiny pinpoints as seen from Earth, even through telescopes. Planets don't twinkle because they are closer, and thus appear larger in our sky, as tiny disks instead of pinpoints.

Answer 2

as the stars have their own energy and light so they twinkle but planets doesn't have own energy , they only reflects the light from stars so the don't twinkle