How will the color index of a star change when light passes through the Earth’s atmosphere? Which star’s color index will

How will the color index of a star change when light passes through the Earth’s atmosphere? Which star’s color index will change more – red or white?

The Earth’s atmosphere attenuates shortwave radiation more strongly. This means that the light passing through it will become more “red”: the color indicators of the star will “redden” – increase. Their change will not depend on the values of the color indicators – the color indicators of both red and blue stars will change in the same way.

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