If the sky wasn't blue, what color would it be??
And, no, not when it's grey.
It would be red, think about it.
It would depend on whether the sky even exists. The sky is atmosphere, right? So, earth's moon doesn't have atmosphere, and neither do many other planets, moons, etc. Do asteroids have a sky? No. So basically in some cases the sky would just be black - nothing.
The sky appears blue during the day because of a phenomenon known as Rayleigh scattering. When sunlight passes through Earth's atmosphere, the shorter blue wavelengths are scattered more easily than the longer wavelengths of light, such as red and yellow. This scattering causes the blue light to be scattered in all directions, so we see the sky as blue.
If the sky were not blue, we would need to consider alternative scenarios. One possibility is that if the atmosphere had different properties or composition, the scattering of light could result in a different color. For example, if the atmosphere had more particles of a different size, shape, or composition, it could scatter light differently and change the color of the sky.
To determine the specific color in a hypothetical scenario, we would need to understand the properties of the atmospheric particles and how they interact with light. This would require detailed scientific analysis and modeling of such conditions. Additionally, the color of the sky can also be influenced by other factors such as pollution, haze, and weather conditions. So it's difficult to predict the exact color without specific parameters.
In summary, if the sky weren't blue, it would depend on the properties of the atmospheric particles and how they interact with light in that hypothetical scenario.