ok... i've listened to this book about 6 or 7 times... i don't really know exactly what it is about it... but i really love it.... it's about a group of extremely bright and industrious teenage boys in the 1950's who get recruited by an atomic engineer/physicist (one of the boys' uncle) to help him build a rocket capable of going to the moon... on a shoestring budget... plenty of excitement and adventure... i can imagine it all... even some intrigue... with a mysterious group who are trying to stop them.... i highly recommend it