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Moon
I have read plenty of times how 'big' the moon appears in the sky, and reasons why.
One I have read, is that a full moon rising just above the horizon looks 'so big' because it is a psychological trick of the mind. That being because the moon is closer to objects on the horizon, the mind has some terrestrial objects to 'compare' it size too. And that is what makes the rising full moon 'look so big'. Personally I disagree with this psychological explanation, like I disagree with many things psychologists say are psychological 'facts'.
It was when I was a child that I became aware of a phenomenon of how light is transmitted through liquids. For example, using a ruler go and try and poke a fish in bowl of water, or a fish tank and you will see what I mean. Even better try going spear fishing flounder. The water, at an angle 'bends' the light, so if you are pointing your spear straight at the target, you are going hungry mate!
The next time I became aware of the transmission of light through water was also when I was a kid, when we used to go to a take away restaurant. They had a massive fish tank full of tropical fish. I noticed that if you looked through the end walls of that tank objects outside the other end of the tank appear much bigger / closer than if you put your head around the corner of that tank and looked at them through just air.
I also noticed this when I used to got snorkeling / spear fishing. Underwater objects appear 'much bigger' and closer than they actually are, and many a time I was disappointed to find that my spear never had the range, and when I did get a hit what I thought would feed a family of 10 underwater wasn't so great when landed back on dry land. Also when underwater, looking up through the surface, objects above the surface appear magnified.
Now, the atmosphere at mean sea level is 40 times denser than water. But the atmosphere acts like a liquid.
I have a hunch, based on my previous visual experiments with water / liquid, that a rising full moon 'appears' much bigger as it rises as the greater thickness of the atmosphere you are looking through as the moon rises above the horizon, is acting on the transmission of the light from the moon, just like is does when viewing objects through water in a fish tank, and underwater.
I have tested the 'psychological' explanation, and it just doesn't cut it.
I have made a point of being at the bottom of an extremely steep granite cliff, that was close to 2500 feet, and I have observed the moon 'rise' above the top of the cliff, through the trees, and a fire watch tower, and at that elevation it would be above the horizon, roughly 30 degress, it does not 'appear' to look the same 'big' size it does as it 'rises' above the horizon as if you were out on the plains watching it rise.
Well, that's what I think is the reason why.
In any event watching a full moon on the rise usually makes me stop for a few minutes to enjoy it.
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