The moon is black.
Yep, the moon is actually made up of black rock. And I love this fact. Because it means the sun is so freaking powerful, it can make an ugly black rock floating in space glow beautifully white.
It's a beautiful parallel to what Jesus does with us. The Son is so powerful and radiant, He can make us ugly, blackened-with-sin human creatures shine white and beautiful and enable us to illuminate a dark world. All we need do is turn our face toward Him.