"Journey through space into the farthest reaches of our Solar System. Guided by astronauts and expert space engineers, learn all about the planets, how they formed, and how scientists study them."-- Page 4 of cover.

Includes index.

Planet Earth and its neighbors -- What is a planet? -- Changing worlds -- Skywatching -- Space age exploration -- The sun -- Mercury -- Venus -- Earth -- Water world -- Living planet -- The moon -- Exploring the moon -- Mars -- The Red Planet -- Roving on Mars -- Asteroids -- Jupiter -- Jupiter's moons -- Saturn -- Saturn's rings -- Saturn's moons -- Visiting the giants -- The outer solar system -- Uranus -- Neptune -- The outer dwarfs -- Comets -- Exoplanets -- Did you know? Solar system facts -- Timeline -- Glossary.