Kevin J Anderson

Teenage cousins are accidentally transported to a world of magic and peril in this YA steampunk fantasy from two New York Times–bestselling authors. Born only five hours part, cousins Gwen and Vic have always been close. But when Vic's mother disappeared, and Gwen's parents died under mysterious circumstances, they needed each other more than ever. Now both fourteen years old, they're about to face yet another challenge together-when Vic's scientist...

It was supposed to be just an educational field trip to the Challenger Learning Center, but JJ Wren and her friends find themselves transported into the future, to a time when the human race is under siege from deadly alien invaders. The evil Kylarn have shifted the orbits of three asteroids, sending them tumbling toward Earth-and a direct impact will have devastating consequences. With instructions and skills they learn from the mysterious Commander...

After an exhilarating space simulation field trip at the local Challenger Center, a group of students are hand-picked by the mysterious Commander Zota for a special adventure: to travel to the future and a real moonbase in trouble, where they will learn skills to save the human race.

With a fierce war raging and resources running low, the U.S.S Enterprise has been assigned a sensitive diplomatic mission - to enlist aid from the alien race known as the Gorn. But the Gorn have a crisis of their own, a brewing revolution in their ranks. And when it comes to the Federation, some of the Gorn have long memories...