Question

why star is twinkling?​

Answer 1

The twinkling of stars is due to atmospheric refraction of star-light. The atmosphere is made of several layers and the refractive indices which keep on changing continuously due to this path of light rays from the star keep on changing their path continuously. As a consequence the number of rays entering, the pupil of the eye goes on changing with time and the stars appear twinkling.

Answer 2

Answer:

because they are made up of fire so they appers to be twinkling.