I understand that light does not "travel infinitely" through the atmosphere and that, according to FET, this is why distant objects cannot be seen. But when night falls, the visibility of distant objects, such as stars, which aren't visible during the day, increases dramatically.
If, as FET claims, atmospheric "clouding" accounts for the sun's disappearance over the horizon at sunset, why does the nighttime moon set and vanish at precisely the same level, when there is virtually no clouding? Since atmospheric clouding is all but nonexistent at night, we would expect the moon to be visible for much longer, and perhaps even at a lower point than the sun is when approaching its vanishing point.
Instead, we see these celestial bodies setting at the same level, regardless of clouding; thus, their disappearance cannot be attributable to it. The corollary to this is that the nighttime invisibility of all distant, earthbound phenomena (e.g. mountains, buildings, city lights, ships, etc.) must be attributable to something other than atmospheric clouding. This raises questions as to why they are unobservable at night, even with powerful telescopes.
What is FET's response to this?