An introduction to the megaplanets Jupiter and Saturn.

The Stars: Glowing Spheres in the Sky answers many questions, such as How are stars formed? How far away from Earth is the nearest star? What is the biggest sta

With Space Probes: Exploring Beyond Earth, young readers can learn what a space probe is, what planets have been explored, what is a rover, and what future miss

Learn about telescopes and observatories: the different types and how they work.

A tour of the ice dwarfs from Pluto and beyond. Learn how amazing space really is.