After reading the product description and the other reviews, I was expecting this book to be centered around the solar system. When in fact, the section on the solar system is one of the smallest sections, and doesn't really go into much detail about the planets -- least of all other space objects like Ceres, Eris, the Kuiper Belt, etc.
The title is very misleading. This is not an encyclopedia about space itself, but rather space science: astronaut training, satellites, and other space technology. They even put in a mention of stormtroopers from Star Wars (space in pop culture), and gave four pages to UFOs.
There is a tremendous amount of information provided, and this is a nice addition to our homeschool library, but I don't understand why our solar system wasn't given more attention. I noticed that a lot of the science facts found in this book could also be found in the DK First Science Encyclopedia.