Why does the sky appear dark instead of blue to an astronaut?
bob23:
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.
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The sky appear dark onstead of blue to an astronaut because....no atmosphere is present outside the earth and hence scattering of light is not possible...therefore it will appear dark
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Astronauts see the sky as dark since there is no scattering of light in space due to the lack of atmosphere.
- When sunlight is refracted by the presence of gases, atoms, and dust particles in the atmosphere, scattering occurs.
- The sky appears blue from Earth because blue light has the shortest wavelength and scatters the most.
- It can be understood by the law of scattering:
I∝1 / λ⁴
where
I = Intensity of light
λ = Wavelength
- However, because there are no such particles in the atmosphere in space to scatter light, the sky seems dark to the astronaut.
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