planetary science

Introduces readers to planets and discusses what they are, how they form, where they are found, and why we study them.

Readers learn about asteroids, what they are, what they are made of, where they come from, and more.

Young readers learn about the planets in our solar system.

Find out about the four planets farthest from the Sun: Jupiter, Saturn, Uranus, and Neptune. Discover why these planets are called the gas giants, which spacecraft have visited them, and what lies beyond them in the solar system.

Find out about the four planets nearest to the Sun: Mercury, Venus, Earth, and Mars. Discover what these planets are like, which has the most moons, and which spacecraft have visited them.