In 2006, Pluto was reclassified as a dwarf planet. Small, rocky dwarf planets make their home on the outer edges of the solar system. Scientists use telescopes to study Pluto and the dwarf planets as they orbit the Sun. Their fascinating findings are on display in this informative title about some of the solar system’s most far-away objects!

Describes Pluto, which was officially designated a dwarf planet in 2006.

Profiles each of the planets in Earth's solar system, including Pluto, Ceres, Eris, Haumea, MakeMake, the sun, the Oort cloud, comets, and more.

Rave reviews for Pluto and Charon: Ice Worlds on the Ragged Edge of the Solar System The story of the quest to understand Pluto and the resulting transformation of our concept of the diminutive planet from that of solar-system misfit to king of the Kuiper Belt is told in this book by Alan Stern and Jacqueline Mitton. Stern, a Plutophile to the core, is one of the most energetic, talented, and savvy planetary astronomers in the business today. Mitton, trained as an astronomer, is an experienced writer and editor of scientific books for nonscientists. Together they have created an immensely informative book . . . Written in an engaging and informal style, Pluto and Charon takes the reader step by step from the discovery of the ninth planet in 1930 to the current understanding of Pluto and its moon, Charon.-Sky & Telescope More than a book summarizing what we know about [the] planet, [Pluto and Charon is] about how far and how fast astronomical technology has come since 1965 . . . Stern and Mitton use the narrative of Pluto research to explain in comfortable, everyday language how such work is done . . . One of the nice touches in the book is that Stern and Mitton tell us something about each astronomer.-Astronomy Pluto and Charon presents the exploration of the ninth planet-written as a vivid historical account-for anyone with an interest in science and astronomy . . . the authors describe in simple language the methods researchers use to explore the universe and the way ever-improving instrumentation helps their knowledge advance.-Physics Today

Dwarf planets (which were formerly called asteroids except for the planet Pluto), and the smaller Solar System bodies still called asteroids today, are making front page news, particularly those that are newly discovered and those that might present a hazard to life on Earth by impacting our planet. In this age of giant telescopes and space probes, these small Solar System bodies have advanced from being tiny points of light to bodies worthy of widespread study. This book describes the dwarf planets and asteroids themselves, their origins, orbits, and composition, and at how amateur astronomers can play a part in their detection, tracking, and imaging. The book is divided into two parts. Part I describes physical properties (including taxonomic types) of dwarf planets and asteroids, how they formed in the early life of the Solar System, and how they evolved to their present positions, groups, and families. It also covers the properties used to define these small Solar System bodies: magnitude, rotation rates (described by their light-curves), and orbital characteristics. Part II opens with a description of the hardware and software an amateur or practical astronomer needs to observe and also to image asteroids. Then numerous observing techniques are covered in depth. Finally, there are lists of relevant amateur and professional organizations and how to submit your own observations to them.

Author David Aguilar uses brilliant photo-realistic illustration and fascinating up-to-date facts straight from the latest astronomy news to bring you a comprehensive look at our solar system as you've never seen it before.