Planets
According to legend, the God Emperor ruled over hundreds of worlds. The real size of the Imperium may never be revealed, as much knowledge has been since the fall. Here are the worlds encountered by the members of the Lost Fleet in roughly chronological order of when they were visited.
Pollor
Pollor was the first inhabited world encountered by the Lost Fleet. Fleet scientists determined that the planet had been deliberately terraformed for use as a food world. The population lived an agrarian lifestyle, having regressed to pre-industrial technological levels since the fall of the Emperor. The populace were apparently descended from slave laborers left behind when the last of the Imperial overlords fled the planet. The main population center sits just outside the ruins of the old Imperial City, where the people rarely venture anymore. The Fleet soon made Pollor its base of operations, exchanging medicine and technology for food from the populace. Engineers and scientists also began examining the city ruins for evidence of how Imperial technology worked.
Being located far from the center of the former Empire, Pollor was fairly isolated; however, it would suffer from occasional raids by pirates looking for food and new recruits. One such pirate raid occurred shortly after the Lost Fleet's arrival. Since the Odyssey broke away from the Fleet, the Angel colony ship has been landed and the civilian refugees from Haven relocated to the Imperial City while Imperial ships loyal to Baron D'Harek have begun arriving in-system as part of the Baron's new alliance with Ghost Squadron.
Outpost World
This desert world was once the home of one of the more remote Imperial Outpost Bases. After the Fall, the soldiers stationed at the outpost were stranded. The descendants of those soldiers still live in the old base, situated inside a cliff face. In the two centuries since the Fall the people have regressed to a tribal structure with the old military ways becoming twisted into a religion. Unit banners have now become icons of worship, and the people still attempt to contact their superiors, now transfigured as gods, by performing sacrifices in the room that once housed the base's communications equipment. For food, the tribe subsists on a mix of plants grown in the sheltered valley the outpost base was built around and by hunting the giant lizard creatures and other animals that roam the desert wastes.
Ascallon
A world near the edge of Imperial space, Ascallon was the birthplace of the rebellion against the Emperor centuries ago. The planet appears to have a strange connection with Earth, more specifically the Robotech Forces, as ancient cave paintings on the planet depict the RDF arrowhead logo. The planet was also where the uniform of White Wolf pilot Natalia Makarov reappeared after it was lost in ancient Atlantis. It was because of this strange connection that the Traveler chose to plant the seeds of the rebellion. After the Wayfarer's arrival in Imperial space the ship and its crew were welcomed at Ascallon, and after the defeat of the Emperor and betrayal of the Traveler, the planet was where Steven Lucas chose to leave the clues to the fate of the ship. Centuries later, when the Lost Fleet arrived in the area, they found the clues left behind and began to piece together the mystery of the Wayfarer. The Librarian, Tala, is from Ascallon.
Kitia
Kitia is a blue-green gas giant that served as the primary shipyards of the Imperium and continues to serve that role for the Baron D'Harek today. The planet is the region's primary source of Quicksilver, .the liquid monopole that is needed to open gateways to Hyperspace. In addition to the Quicksilver, Kitia has other unusual properties. The upper reaches of the planet's atmosphere contains a layer of breathable air, and a ring of asteroid "islands" float within the region. These islands are habitable, with plants and settlements. The main Quicksilver extraction facility is built on the largest of these ring islands, and the inhabitants sail the upper atmosphere in skiffs that ride the planet's magnetic currents.
Guardian World
The so-called Guardian World is one of the pilgrimage worlds containing temples dedicated to the God Emperor. In the early days of the Empire, the faithful would make the lengthy slower-than-light pilgrimages from world-to-world to show their dedication to the Emperor. The most fervent of these pilgrims would often be selected to enter the Emperor's service. When the Traveler made his move against the Emperor, he left clues behind to help those he knew would eventually arrive so they would be able to locate his main lab (see the Traveler's Tomb, below). With a sense of irony, the Traveler chose to hide the key to the location of his Tomb within one of the main temples of the Imperial pilgrimage route.
Purgatory
The site of an Imperial spaceport in the early, pre-Hyperspace, days of the Empire, the planet later known as Purgatory had been abandoned for centuries when the crew of the Wayfarer were evacuated to the surface. Once a fairly hospitable planet, the biosphere had worsened over the years and the planet was now mostly rocks and sand. When the Wayfarer evacuees came to realize that rescue was not forthcoming they settled in for long term survival and named their new home Purgatory.
Barony
Barony has been the homeworld of the D'Harek family for centuries. Since the destruction of the Emperor and the fall of the Imperium, Barony has become the new center of power in this region of space. From Barony the D'Harek's have managed to consolidate power over much of what had been the core of the old Empire and have begun to expand back outward in an effort to rebuild the Empire with the current Baron D'Harek at its head.
Stellar Phenomena
There are several notable stellar phenomena within the bounds of Imperium space which have a symbolic, and sometimes very real, impact on its people.
The Maelstrom
The Maelstrom is a large black hole located near the center of the Imperium. The Maelstrom was created in the aftermath of the Wayfarer's final confrontation with the God Emperor. When the massive gravity manipulators of the Throneworld were destroyed in the battle the four suns they held in place began to collapse into each other. In a massive cataclysm the four collapsing stars merged in a black hole and the resulting chaos sent shock waves across space, and through Hyperspace - destroying the Imperial Star Gate network and leaving Hyperspace unnavigable for decades afterward.
The Watchtower
The Watchtower is a variable star that has served as a major reference point for interstellar navigation in the Imperium since early efforts at space travel. After the fall of the Empire the Watchtower remained one of the common points of reference in the sky across the now divided worlds.
The Veil
At the farthest edge of the Imperium lies the gaseous curtain of a nova shell. This remnant of a long-ago stellar explosion served as a physical barrier marking what was then the boundary of the God Emperor's control.
Pirate Bases
When the Traveler turned against the God Emperor he did not do so unprepared. In addition to sowing the seeds of rebellion across many worlds, the Traveler also set out to create a support network for efforts against the Imperium. While Raven set out to gather together the first of the Freebooters the Traveler created a series of docking and support facilities hidden inside asteroids scattered across Imperium space. Some of the more important of these bases were:
Sanctuary
Sanctuary was not a single asteroid base but several bases linked together within the asteroid field of a remote system. Sanctuary was the central staging area for the Freebooters and became their major gather point. The system containing Sanctuary was far enough away from the center of the Cataclysm that occurred the fall of the Empire that it was one of the few systems whose Star Gate was not destroyed. As such it continued to be home to the Freebooters as they devolved from privateers supporting the rebellion to mere pirates and raiders eking out an existence by raiding the remnants of the Empire. Sanctuary was eventually discovered by the forces of the Baron D'Harek after one of the Pirate Captains betrayed its location in an effort to seize power.
Raven's Tomb
When the Lucas family rescued Raven from the Traveler she was badly damaged. Knowing they had to keep the Traveler from finding her, the Lucas family and their Freebooter allies converted one of the support asteroids into a tomb where Raven's android body could be placed in stasis to keep her safe. They equipped the base with extra defenses cobbled from their REF spacecraft and set up security systems that only someone from Earth could easily bypass.
Traveler Bases
In addition to the asteroid support bases he set up for the Freebooters, the Traveler also built a series of hidden labs on remote planets. Using the Hyperspace Compass he had created, the Traveler was able to locate lost worlds, terrestrial planets that had drifted away from their parent stars. These worlds would be virtually impossible to locate without some idea of their location and a device like the Hyperspace Compass to detect their minor gravity wells.
Tomb of the Traveler
The first and greatest of the Traveler bases was the one that would come to be called the Traveler's Tomb. Located on the moon of a ringed gas giant that had long ago left its parent star system the base had an inexhaustible power source by using the moon's own transit through its parent world's massive magnetic field to generate power. It was here that the Traveler designed and built the Crusader mecha used by the Rebellion, and where he designed the Avatar mecha that White Wolf eventually used to defeat the God Emperor. The world became known as the Traveler's Tomb because this is where the Traveler put himself into stasis to await the arrival of allies from Earth he believed would eventually be drawn to Imperium space. After the betrayal of the Traveler, the Tomb became the reluctant home of White Wolf member Daryll Merlyn, who was forced to use the same technology to place himself in stasis while awaiting rescue.
Map of Imperium Space