Publisher's blurb: For a thousand centuries the Ascendancy ruled the galaxy, but now the empire has fallen into an age of decadence and decay. Ambitious nobles and barbarian conquerors vie for power. Heroes armed with star swords and phase pistols seek the mysterious artifacts of a forgotten age. Finally, an ancient enemy has returned to the galaxy: one by one, the stars are going out. The Dark Nebula Mission Guide contains everything you need to run an evocative, far-future campaign for the Alternity Science Fiction Roleplaying Game. This sourcebook includes: An overview of the factions, threats, aliens, and key locales of the Dark Nebula setting. Five ready-to-play adventure episodes set in the dying empire of the Ascendancy. An appendix introducing three new player character species: the stealthy dyanthi, robot heroes, and the feral zendi.