Describes dwarf planets and other celestial bodies within the solar system, including asteroids, comets, and meteors, and discusses the nature of the solar system and how and why satellites move in orbit.
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Describes what a planet is and how the planets move in our solar system. Also explains what asteroids, comets and meteors are and how they may come into contact with Earth.
Examines the unique properties of the Earth and its Moon, bodies in the solar system often overlooked by those of us so close to them.