An exploration of Pluto and other dwarf planets that describes what a planet is and provides information about Pluto's moons, the Kuiper Belt, Eris, asteroid belts, Ceres, and more.
General Note
Includes index.
Content Note
What is a planet? -- Pluto is not a planet! -- The first dwarf planet -- Pluto's moons -- Cool facts -- The Kuiper Belt -- Eris -- The asteroid belt -- Ceres -- More dwarf planets.