Question

Why the colour of sky appears dark instead of blue to an astronaut?

Answer 1

Answer:

the colour observed from space by an astronaut of the sky appears dark blue due to the ocean. the atmosphere has no colour and hencethe colour the astronaut sees is the colour of the ocean.

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Answer 2

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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.