Question

why does sky appear black instead of blue 2 the astronauts?

Answer 1

Sky appear black to astronauts because there is no atmosphere in space so there is no refraction and scattering of light.We see the blue colour of sky because of atmosphere.Due to the absence of atmosphere,the sky appears black.

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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.