Readers discover the difference between natural and human-made satellites in this entertaining volume. The narrative reveals fun facts about various moons in the Earth's solar system, such as Earth's moon and how it might have been formed, the moons of Mars, Jupiter, Saturn, Uranus, and Neptune, and those of the dwarf planet Pluto. It also explains the terms orbit, spin, rotation, and eclipse. The volume provides Think About It boxes to pose questions for readers' consideration. There are also vocabulary boxes and Compare and Contrast sidebars to engage readers' intellect.