The planets

From tiny Mercury to distant Neptune. Compare the eight major planets, then open each guide for a closer look.

Learn the essentials of Mercury and how it connects to the Sun, planets, moons and orbital motion.

Learn the essentials of Venus and how it connects to the Sun, planets, moons and orbital motion.

Our home world: a rocky planet with liquid oceans, a protective atmosphere and one natural moon.

Learn the essentials of Mars and how it connects to the Sun, planets, moons and orbital motion.

Learn the essentials of Jupiter and how it connects to the Sun, planets, moons and orbital motion.

Learn the essentials of Saturn and how it connects to the Sun, planets, moons and orbital motion.

Learn the essentials of Uranus and how it connects to the Sun, planets, moons and orbital motion.

Learn the essentials of Neptune and how it connects to the Sun, planets, moons and orbital motion.