To an observer on the earth the stars appear to twinkle. This can be ascribed to

Stars appear to twinkle . Give reason.

(a) Give reasons for the following: (i) The sky appears to be blue during day time to a person on earth. (ii) The sky near the horizon appears to have a reddish hue at the time of sunset and sunrise. (iii) The sky appears dark instead of blue to an astronaut. (iv) The stars appear to twinkle. (v) The planets do not twinkle.

Stars are twinkling due to

Stars twinkle due to

Will a star appear to twinkle if seen from free space (1 cm say moon) ?