This might be a question with an obvious answer.
Ok, so during the day light from the sun bounces off the air in the atmosphere and into our eyes. because the atmosphere isn't solid it's transparent, but as layers of it build up (IE as we see further away) more of the air is visible, creating a fog.
So at night, we can see the stars because of the lack of light bouncing off the atmosphere, correct?
Now, does that mean an atmosphereic fog to create depth at night would be incorrect?