the moon is made of light alone, as only light can reflect, and shadows do not. this is why we have multiple people now, that have captured stars, through the dark side of the translucent, holographic moon, because our brain normally completes the circle with the mind automatically. unless you think about it, can you understand this principle. unless you know what you should see, can you recognize it, or not. one can only project through space, not on space.
Real spheres have highlights and a roll off from the center to the rims, the full moon does not.