Question

Why does the sky appear dark instead of blue to astronout

Answer 1

The blue color of the sky is a result of this scattering process. At night, when that part of Earth is facing away from the Sun, space looksblack because there is no nearby bright source of light, like the Sun, to be scattered.

Answer 2

Explanation:

The sky appears dark instead of blue to an astronaut because there is no atmosphere in the outer space that can scatter the sunlight. As the sunlight is not scattered, no scattered light reach the eyes of the astronauts and the sky appears black to them.