Set your course for the stars and prepare to explore the grandeur and intrigue of Galactic Empires, where vast interstellar realms and cosmic power struggles define the landscape. 

In this subtopic, you'll delve into stories of magnificent space empires, imperial politics, star-spanning conflicts, and the individuals who navigate these colossal entities. These narratives weave tales of ambition, conquest, and resistance on an epic scale, showcasing the rise and fall of dynasties, the clash of civilizations, and the fate of entire galaxies. 

Journey through the complex and opulent universe of Frank Herbert's 'Dune', with its intricate political machinations, or Isaac Asimov’s 'Foundation' series, chronicling the scientific endeavor to save a collapsing empire. Each book in this category offers a glimpse into sprawling cosmic societies, their intricate hierarchies, and the balance of power across star systems. 

Prepare to be immersed in worlds where the stakes are as immense as the galaxies they span, and every decision can alter the course of history on a universal scale.