Colliding hadrons! If Earth is to be saved, George and Annie - with the help of their computer genius friend Emmett - must use the super-computer to travel into space. First stop Mars - and then on to the very edge of the known galaxy, as they follow one clue after another on a fabulous treasure hunt across the cosmos.

Paperback
02-04-2009
Random House Children's Books
9780385613828
215 x 152 mm
320