[disndat]

[ETL]

...brings to mind that large moon on the horizon illusion thing. But then, it isn’t only the moon that appears to be larger when it’s lower in the sky, when it really isn't, it’s constellations and, obviously, the sun. Fact is, though, they are *not* actually larger. When they are angularly measured at both locations the results are identical. ie, the moon is half a degree at both the horizon and at its highest point in the sky.

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From wiki...

The Moon illusion is an optical illusion which causes the Moon to appear larger near the horizon than it does higher up in the sky. It has been known since ancient times and recorded by various cultures. [1] [2] The explanation of this illusion is still debated. [3] [4] [2]

Contents
1 Proof of illusion
2 Possible explanations

2.1 Refraction and distance
2.2 Apparent distance hypothesis
2.3 Relative size hypothesis
2.4 Angle of regard hypothesis

https://en.wikipedia.org/wiki/Moon_illusion
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Also see
THE MOON ILLUSION
http://www.muskingum.edu/~psych/psycfair/moon.htm