Via

From the text:

August is the Sun. Me and Mom and Dad are planets orbiting the Sun. The rest of our family and friends are asteroids and comets floating around the planets orbiting the Sun. The only celestial body that doesn't orbit August the Sun is Daisy the dog, and that's only because to her little doggy eyes, August's face doesn't look very different from any other human's face. To Daisy, all our faces look alike, as flat and pale as the moon.