On the planet Nebulon in 2120, Zack joins his school's Explorer's Club and visits Juno, a planet made of crystals, but he is less than thrilled when he is partnered with the class bully.

Will troublesome cabin mates ruin Zack's summer at space camp on the planet Sylvan?

"Zack is thrilled when his best friend on Earth, Bert Jones, visits for the weekend. But when Zack introduces Bert to Drake, his best friend on Nebulon, trouble begins"--

Raised underground by a robot, twelve-year-old Eva Nine finally finds all she ever wanted in the human colony of New Attica, but something very bad is going on there and unless Eva and her friends stop it, it could mean the end of life on Orbona.

Plumbers' helpers Manny, Helen, and Pierce have always been a little envious of the respect Grandpa Max shows to Ben, Gwen, and Kevin. Now they're determined to prove they can be just as successful as the three teens. Which team will be first to deactivate an alien spy transmitter? The race is on!.

Abducted by aliens periodically throughout his youth, Henry Denton is informed by his erstwhile captors that they will end the world in 144 days unless he stops them by deciding that humanity is worth saving.

When his project malfunctions during the Intergalactic Science Fair, will Zack, a boy from Earth living on the planet Nebulon, be able get things under control before disaster erupts?

Prez knows that the best way to keep track of things is to make a list. That's important when you have a grandfather who is constantly forgetting. And it's even more important when your grandfather can't care for you anymore and you have to go live with a foster family out in the country. Prez is still learning to fit in at his new home when he answers the door to meet Sputnik--a kid who is more than a little strange. First, he can hear what Prez...

"Best pals Dana and Fox are having a backyard sleepover. But the night is full of strange sounds, lights, and shadows. Surely there's a rational, scientific explanation for everythingEright? One of TV's most popular shows is now a sweet, silly, sci-fi bedtime story."--Provided by publisher.

In 2041 twelve-year-old Dashiell Gibson is a resident of Moon Base Alpha, and at the moment he is faced with a number of problems: coping with the nasty Sjoberg twins, finding out how the commander of the base has managed to disappear from a facility no bigger than a soccer field, and dealing with the alien Zan who communicates with him telepathically from afar--and who is hiding a secret which may threaten the whole Earth.