Recently, in the United States, the moon and sun have become very deep red when they are near the horizon. The reason given for this is that there have been extensive wild fires in the Northwest. So, the smoke is apparently making the sun/moon red instead of yellow/orange. Why does smoke have this affect?
My guess is that the smoke is preferentially absorbing blue and green light emitted by the object, thus the balance of light is being tilted to the red part of the spectrum. If this is right, then why is the blue/green light absorbed more by the smoke? I mean the smoke should either block the light or not block it, right? Why should the color of the light make a difference?