Readers travel to the farthest reaches of the solar system in this look at Pluto and other dwarf planets. Fun facts about these space objects are presented using simple language that is easy for reluctant and struggling readers to understand. They'll discover what makes a dwarf planet different from other planets and why Pluto joined the ranks of the dwarf planets in 2006. In addition, graphic organizers and diagrams present space science concepts in a way that appeals to visual learners. Impressive, full-color photographs and charming illustrations guide readers through an introduction to astronomy that's truly out of this world!