Aldea
From Star Trek: Theurgy Wiki
Aldea, also known as Epsilon Mynos III, was a independent planet in the Epsilon Mynos System. A supposedly mythical world whose inhabitants constructed a planet-wide cloaking device to hide their planet from marauders. This was until 2374, when the USS Enterprise-D deactivated the cloak and the defence system for them, since the antiquated technology - while immensely powerful - had destroyed the ozone layer of the planet. When this defence system was deactivated, the sky ceased to be purple, and took on the natural gold and and red colours of its atmosphere.
Since then, the Aldeans struggled to repopulate their world after generations of gradual decline. They had to repair the ozone layer, and find allies in a galaxy that was very keen to discover what Aldea had to offer, ranging from the more amiable Federation to opportunists like the Orion Syndicate and the Ferengi. After a time of great turmoil, Aldea found an ally in the Klingon Empire, and traded bits of their science and knowledge of the galaxy with the Klingons for protection. As of 2381, Aldea remained loyal to the Empire, and given the wealth of knowledge the Aldeans possessed, patrolling the Epsilon Mynos System and providing planetary defences on Aldea remained a matter of great priority for the Klingon High Council. The alliance even resulted in the construction of the Aldea Prime Shipyards, which Starfleet may have begun to build before the years of turmoil, but the Empire finished.
History
Aldea was hidden from view for millennia by its powerful planetary defense system, devised by the Progenitors and run by the Custodian. The system included an enormous planet-wide cloaking device that hid it from marauders and other threats. In addition to the cloaking device, Aldea was defended by an immensely powerful shield that could only be penetrated by Aldean technology. Through the Custodian, the Aldeans also had access to a repulsor beam powerful enough to push starships several hundred light years distant. The safeguards allowed the people to pursue culture and become artisans in complete safety, but as a society, they became too reliant on the Custodian, forgetting the necessary technological backgrounds of how their own technology worked.
For thousands of years the existence of Aldea was considered to be only a rumor, similar to the cultural myths of Atlantis or Neinman. However, by the mid-24th century the planet-wide cloaking device was responsible for cumulative damage to the planet's ozone layer, resulting in widespread radiation poisoning from the Aldean sun's ultraviolet rays, causing the species to become sterile. To try to rectify their dire situation, they attempted to kidnap various Enterprise-D children in the year 2364, including Wesley Crusher, to repopulate their planet. After the failed attempt, the Aldeans agreed to accept help from the Enterprise-D to relearn how to properly use their technology, never again to use their shield and cloaking device, and medical treatment reversed the radiation poisoning in the population, which would restore fertility in time.
On that day in 2374, when the USS Enterprise-D deactivated the Custodian for them, the sky ceased to be purple, and took and the natural gold and and orange colours of its atmosphere.
Since the Custodian's shield and cloaking system were deactivated, the Aldeans ceased to be a mythical people, and ended up at the mercy of all the treasure hunters in the Galaxy. The attention their planet held for external powers were a deep concern, since they did not know how to protect themselves without the Custodian. The Federation tried, but weren't prepared to commit enough forces to to protect the planet from all marauders and hostile species. Even though they were jeopardising the longevity and fertility of their population, they were forced to reactivate the Custodian several times so that they might defend themselves, yet only as a last resort. This was, of course, not a sustainable solution. Desperately, the Aldeans made arrangements with the Klingon Empire to act as a stronger and more readily available defence force. The Federation and Starfleet might have - eventually - rallied enough forces to protect Aldea, but the Klingons proved their worth in being in the right place at the right time.
As of 2381, the Aldeans had very strong diplomatic ties to the High Council on Qo'noS. While they were still grateful to Starflee for being able to save their people from extinction, the Klingons now served to protect their growth.
Aldea Prime Shipyard
Aldea Prime Shipyard was shipyard that the Federation used to have access too but as of 2381, it was primarily used by the Aldeans and the Klingon Empire. It had a space station drydock facility and it was named for its vicinity to Aldea and its capital - Aldea Prime. The newly constructed shipyard of the Aldeans', commissioned in 2368, was used by Starfleet at the onset of diplomatic relations with the Federation. This, after the Custodian was taken offline, and it continued to be so until tthe end of the 2370s. Because of Aldea standing closer with the Klingon Empire than the Federation, Starfleets initial access to the shipyard was rescinded. Not because of sour diplomatic relations, exactly, but because the Aldeans owed it to the Klingons to let them take over the Federation's access. The KDF (Klingon Defence Force), instead, had access to the facilities as of 2381, making it a natural port if they were to protect Aldea on a long-term basis.