Lunation (1.2)

I found the animation of the moon's lunation, or lunar cycle, very interesting. I was under the impression that the face of the moon towards us never changes, and therefore was surprised to see the variance in its diameter as well as its libration. Additionally, I found that, through the libration link, there is a slower animation of the moon's lunation that is significantly easier to see than the one on the APOD site.