Alex has a pesky little brother named Jonathan who is always getting into his things. Alex decides that the obvious solution is to build Star Jumper, a spaceship made out of cardboard boxes and duct tape, and fly into outer space far away from Jonathan. After testing the spaceship, Alex realizes that he must return to Earth to create a Micro-blaster. What happens when he accidentally blasts Jonathan, and some other inventions go awry, too? Read this hilarious book for a new view of sibling rivalry and cardboard inventions. Look for the sequels: Gravity Buster and Time Twister.