Let's get the bad news out of the way first. Most of the time as I was reading Jacob Wonderbar and the Cosmic Space Kapow, I felt like it was aimed for younger kids. For example, they're concerned with the colors of their space boots. But then, the writer also uses the word "sexist", and so I'm wondering if the book is aimed for older or younger kids. Good news: the story, on the other hand, is excellent. They all get separated at one point, so there are different subplots, and the cliffhangers are also amazing. I'm not really sure if I like the book or not.