The moon near the horizon appears larger than the same moon overhead. for centuries, this effect has been argued about. Even today, we're still not sure why it happens. So driving to work this morning, I wasn't surprised to find that the crescent moon appeared larger than usual. I took a picture of the moon and then cropped the image to focus on the moon. It's surprising just how small it appears in the image.
You could prove the full moon illusion is just an illusion by using your cell phone to photograph the moon at moon rise and then several hours later. In both pictures, the moon will be the same size, but you'll swear the earlier moon was larger.
Here's a link to a Wikipedia article that you might find interesting, https://en.wikipedia.org/wiki/Moon_illusion
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