Question

Why the sky not blue in day on space?​

Answer 1

$\huge{Reason:}$

Even though in the space Sun is present but there is no light and the sky is not blue and its dark because there is no atmosphere so the light rays of sun cannot scatter.

Answer 2

The daytime sky is blue because light from the nearby Sun hits molecules in the Earth's atmosphere and scatters off in all directions. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered.