Here's a weird one.
I can't believe that the science isn't totally settled on this. I always thought that the reason the moon appears larger when it's close to the horizon was because of a magnification effect of the atmosphere. Boy, was I way behind the times. Aristotle thought the same thing, but the moon occupies the same half of an angular degree in the sky regardless of it being on the horizon or straight over your head.
Dec 13, 2016 - "Why the Moon Looks Bigger Near the Horizon" by Nadia Drake on news.nationalgeographic.com