For twelve thousand years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Sheldon, creator of the revolutionary science of psychohistory, can see into the future -- to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge and save mankind, Seldon gathers the best minds in the Empire -- both scientists and scholars -- and brings them to a bleak planet at the edge of the Galaxy...

"The Laconian Empire has fallen, setting the thirteen hundred solar systems free from the rule of Winston Duarte. But the ancient enemy that killed the gate builders is awake, and the war against our universe has begun again. In the dead system of Adro, Elvi Okoye leads a desperate scientific mission to understand what the gate builders were and what destroyed them, even if it means compromising herself and the half-alien children who bear the weight...

"After nearly a decade away, Nebula Award-winning author Elizabeth Moon makes a triumphant return to science fiction with a thrilling new series featuring the daring hero of her acclaimed Vatta's War sequence. Summoned to the home planet of her family's business empire, space-fleet commander Kylara Vatta is told to expect a hero's welcome. But instead, she is thrown into danger unlike any other she has faced and finds herself isolated, unable to communicate...

Once again, Earth is under attack. An alien species is poised for a final assault. The survival of humanity depends on a military genius who can defeat the aliens. But who? Ender Wiggin. Brilliant. Ruthless. Cunning. A tactical and strategic master. And a child. Recruited for military training by the world government, Ender's childhood ends the moment he enters his new home: Battle School. Among the elite recruits Ender proves himself to be a genius...