Cosmic by Frank Cottrell Boyce

This was a very fun book.  From the front flap: 

Liam has always felt a bit like he's stuck  between two worlds.  This is primarily because he's  twelve-year-old kid who looks like he's about thirty.  Sometimes it's not so bad, like when his new principal mistakes him for a teacher on the first day of school or when he convinces a car dealer to let him take a Porsche out on a test drive.  But mostly it's just frustrating, being a kid trapped in an adult world.  And so he decides to flip things around. Liam cons his way onto the first spaceship to take civilians into space, a special flight for a group of kids and and an adult chaperone, and he is going as the adult chaperone.  It's not long before Liam, along with his friends, is stuck between two worlds again --- only this time he's 239,000 miles from home.


I appreciated the humor in the book.  Liam is a big World of Warcraft fan/player and if you have any experience with that kind of game (or know a child who does) I have a feeling you will appreciate that part of Cosmic.