Stowaway
(Book)

When scientists discover a rare and mysterious mineral buried in the Earth's crust, it's not long before aliens show up to our little corner of the galaxy offering a promise of protection, some fabulous new technology, and entry into their intergalactic coalition in exchange for this precious resource. Other alien forces are willing to start a war over it. Leo's mother was killed in one attack, and soon after, his father, a Coalition scientist, decides it would be best for them to leave Earth behind. Their ship is attacked, Leo's father is kidnapped, and Leo and his brother are stranded in the middle of space. Theie only chance for survival: stow away on a ship of mercenary space pirates bound for who knows where and beg the captain to help him find his father. -- adapted from jacket