13.1 The Discovery of Uranus 13.2 The Discovery of Neptune 13.3 Uranus and Neptune in Bulk 13.4 The Atmospheres of Uranus and Neptune 13.5 Magnetospheres and Internal Structure 13.6 The Moon Systems of Uranus and Neptune 13.7 The Rings of the Outermost Jovian Planets 13.8 The Discovery of Pluto 13.9 Pluto in Bulk 13.10 The Origin of Pluto Chapter Review