Question

Why stars twinkle, plants do not.?

Answer 1

Stars twinkle because they are so far away from Earth that they appear as point sources even when seen through powerful telescopes. The light rays coming from them are refracted multiple times, making them look as if they were blinking. The sun and other planets, however, are quite close to us (relative to stars), and thus appear like disks.

Answer 2

Star twinkle bcz they are away from earth and twinkling of a star is due to atmosphere refraction of starlight. When star light enters erth atmosphere it continuously refrect before reach earth. The atmosphere reaction occurs due to changing of refractive index. The star twinkle because of star light is point size and star is at distant from earth the light coming from star refrated by some particles. But planets are much closer to earth thus seen as extended source. Plant is large number of collection of point size light variations in the amount of light entering our eye from all the individual point sized sources will average out to zero, thereby nullifying (zeroing) the twinkling effect

Hope this would help you
@Rohit