"Did you know that the Sun and the Moon appear the same size in the sky? That's because the Sun is 400 times bigger than the Moon, but also 400 times farther away. It's been called "the great coincidence" but is it really just coincidence? Come take a journey through the solar system to learn secrets of the Sun and Moon, and get a front-row seat as they line up to show us the amazing eclipse miracle!"-- from back cover.