extrasolar planets

Blinded by heavy mist, a misstep causes Erro to plunge into a deep canyon where he is caught by one of the giants who is imprisoned there while Zak is plucked off the cliff ledge by a different giant--but the giants are not friendly, and while they are discussing whether to give the boys to the Alcatraz guards or turn them into lunch, Zak comes up with a way to escape either fate.

Zak has been captured and sent to Planet Alcatraz's "Monster Zoo" where the inmates are forced to fight for the entertainment of the Overseers--but Erro is still free and he is determined to use all his Quom survival skills to rescue his human friend.

"[This book] traces the journey of astronomers and researchers on their quest to explore the universe for a planet like Earth"--Provided by publisher.

"Young readers will learn all about the search for another Earth"--Provided by publisher.

"On their second mission to find another habitable planet, the four mutant animals, LaserShark, AstroWolf, SmartHawk, and StinkBug, splash land on the Water Planet, run by some suspiciously friendly clams, who are very eager to swap planets--and if the AstroNuts can stop arguing among themselves they may find out why before it is too late"--Provided by publisher.

Readers will go on a journey through some of the most exciting discoveries and achievements made by scientists.

Explores the scientists search for new planets, including what makes a planet, new discoveries, and technology.

Caught by the guards, Zak and his alien friend, Erro, are taken to the Pit, one of prison Planet Alcatraz's most escape-proof features, where every movement causes the Pit to descend deeper--and somehow the two teenagers will have to figure out a way to climb the walls and escape.

Teenagers Zak and his alien friend, Erro, are trying to make it across the Plateau of Leng before the rising sun reveals them to the robot guards of Planet Alcatraz, but suddenly mountain-sized crystals start rising through the desert sands, threatening to trap them in a circle with a giant scorpion--and the boys must figure out how to escape this series of hazards.

Captured by the sadistic guards of the prison planet Alcatraz, the two teenage friends, Zak, and the alien Erro, are placed in bottomless cages hovering over a sea of poison acid and if they fall asleep or lose their grip they will fall to their deaths--and Zak will need all of his ingenuity if he is going to figure out a way to save himself and his friend.