Why does the Full Moon look so large when it rises, and so small at midnight?

The answer given relates to an unproven theory, not a fact. The answer at this time is 'Nobody knows'.

That is not the correct answer, it is just one of the theories, correct answer is Nobody Knows as it is not proven yet.

Very disputable answer...

My astronomy Professor explained that the moon looks larger in the horizon than it does in the Zenith due to the comparison to the things at the horizon on the earth and that you have nothing to compare it to in the zenith...You can prove this by blocking from sight the other things that are in view at the horizon (i.e. look through a cardboard tube)...also if you can use mirrors to trade places with the two positions they will look the same.

I agree with Robert, a theory is not a fact it is a point for debate, a fact stands on its own!

Total bogus question.

I do not agree with your answer. Atmospheric distortion (magnification) is more pronounced on the horizon then at the zenith of the moon's arc.

Too little information for an incorrect explanation

Robert Cone, agree

According to AI the moon illusion is related to the concept of size constancy, which is part of the broader field of perceptual psychology. Size constancy, or the relative size theory, explains how our brain perceives objects as maintaining the same size even when their distance from us changes. In the case of the moon illusion, our perception of the moon's size is influenced by its proximity to the horizon and the lack of reference points to gauge its size against when it's higher in the sky. So, the moon illusion is not exactly the same as the relative size theory. So none of the choices are correct .

I think it's "nobody knows". Surely astrologists could provide a reason?

dcgustin, which is just what the answer states!

No comment on what my Wife thinks of the 'Relative Size Theory ' . 🤣😂

it's an illusion, an optical illusion, either of these would be better answers. nobody knows barely fits as most of us know about illusions, like finding "pop out pics" in those at one time popular pics. even the way some pics look like one thing, then move it and its totally another, or those few of us that can see the 2 (and at times more, depending on...) but well, whomever or maybe its more of a whatever (?) does these "quizzes" just does not have much of a br.. or care about having it right...

Incorrect answer. The correct answer is due refraction due to Earth's atmosphere.

That is NOT the correct answer. It is the magnification of the earth’s atmosphere.

There is water vapor in the atmosphere. When you view the sun or the moon through more atmosphere it appears enlarged. As it climbs higher the light that you see passes more directly through the atmosphere and the moon or size assumes it’s apparent size.

There is more than one theory extant, none of them proven or generally accepted. This answer is simply one of several theories for the illusion. It may be accepted generally as a fact eventually but. at this time, no one knows for sure and this has been the status on this particular illusion for at least several centuries.

There is an on going debate over what is known as the moon reletive possision theory. So the reason is unknown.

This is an excerpt of your reference, The explanation of this illusion is still debated. You have proven yourself wrong.

This answer and many of these comments are wrong! It is called "The Moon Illusion" and is easy to prove! When the moon is at the horizon there are depth cues which cause us to perceive it to be more distant. At its zenith, there are no depth cues and we perceive it to be closer to us. If an object casts an identical sized image on the retina, but is perceived to be further away, then our perception is that it is larger. How to prove it? photograph the moon at the horizon, then from the same spot, photograph it when it is at its zenith. the diameter of the moon is the same in both photographs.

I agree with Robert and John. There are theories but no known reason.