The Jovian system—the planet Jupiter and its moons, magnetosphere, and rings—is discussed in detail and compared with the other giant planets in (in order of increasing difficulty) J. Kelly Beatty, Carolyn Collins Petersen, and Andrew Chaikin, The New Solar System, 4th ed. (1999); David Morrison and Tobias Owen, The Planetary System, 3rd ed. (2003); and Imke de Pater and Jack J. Lissauer, Planetary Sciences (2001). A comprehensive, popular-level review of knowledge of the Jovian system, including early results from the Galileo space probe, is Reta Beebe, Jupiter: The Giant Planet, 2nd ed. (1997). Jupiter’s moons are discussed in the context of all the moons of the outer solar system in David A. Rothery, Satellites of the Outer Planets: Worlds in Their Own Right, 2nd ed. (1999). Detailed descriptions of the Galileo mission and its findings are provided in David M. Harland, Jupiter Odyssey: The Story of NASA’s Galileo Mission (2000); and Daniel Fischer, Mission Jupiter: The Spectacular Journey of the Galileo Spacecraft (2001). The original reference for visual observations of Jupiter with telescopes of moderate size is Bertrand M. Peek, The Planet Jupiter, rev. by Patrick Moore (1981). A more recent account that includes results from the Voyager space probes is John H. Rogers, The Giant Planet Jupiter (1995). Details regarding the Voyager missions may be found in David Morrison and Jane Samz, Voyage to Jupiter (1980).