Why Do Stars Twinkle?
At night, we see millions of twinkling stars in the sky. In all directions light is radiated by these stars. Even if they look very small in size however, actually they are very big in size. Most of the stars are several times bigger than our earth. As they are far away from us therefore they look smaller. Let us study why do stars twinkle? Since no astronaut while traveling in space has reported seeing stars twinkling, the effect must be atmospheric, i.e. due to air. However, it is not exactly correct to say that it is due to