Question

Why sky appears black to astronaut instead of blue?

Answer 1

the molecules in the air splits the sunlight into blue light and send outs the other colours of light. this is called 'tyndall effect'.

because of this,we observe it in space as black and on earth as blue
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Answer 2

$\huge\underline\bold\red{Answer}$✨✨

Space has no atmosphere. Hence, light rays from the sun are not scattered in the atmosphere. Due to this, the sky appears dark to an astronaut.