Felix, Rosa, Braden, and Wendy are investigating with Nate again and this time it's all about the solar system. They're investigating whether or not Pluto is a planet. The definition of a planet has changed, even though Pluto hasn't.
On this adventure, Nate teaches about planets, gravity, satellites, moons, and asteroids. They discover these things while on the way to Pluto, since Pluto is so far away. It also teaches about galaxies and stars.
I loved that Nate Ball makes learning fun and seem like an adventure. I read his first one which is about the Water Cycle and this one reads the same. In the back of the book, there's a glossary and even an experiment for you to do at home. It's "Make Your Own Gravity Slingshot".
Final Verdict: I loved this book as much as this first one. I would recommend this to children who like space and museums. It also clears up why Pluto is no longer considered a planet.