"As one may try to leave Ambrosia, she will always pull your attention back with her boundless beauty, even in the farthest reaches of her borders."-Henidin Theramin
The Dryas Cloud is a region of the Ambrosia Galaxy made up of three hundred and thirty star clusters, along with billions of independent star systems, all in gravitational resonance of each other orbiting the Ambrosia Core. Its members are made up of around 24,000,000,000 stars.
Countless worlds, lifeforms, and civilizations have made their home their. Most notably, the Etymology would have control over the galactic region and its worlds from 3,400,000,0000 BCE all the way to their destruction in the Ambrosia Galaxy in 604,000,000 BCE.
The Dryas Cloud's stars were formed with the formation of the super-massive black hole, the Ambrosia Core in 13,000,000,000 BCE. Throughout the 12,000,000,000 BCEs these stars would move closer and closer together as they were under very little gravitational influence of the super-massive black hole. Most of these stars would clump together under their own respective gravity's and become large star clusters.
In the Etymology Era the worlds in the Dryas Cloud would have average attention given to them by the larger intragalactic government they belonged to. However this all changed during the Dryas Galactic War, an intergalactic war between the Ambrosia Galaxy and its satellite galaxy, the Dryas Galaxy in 2,899,619,067 BCE.
During the Dryas Galactic War the two warring factions of their respective galaxies, the Etymology, and the Dryas Collective were fighting a long, brutal, and seemingly endless war. However this war would enter into the Etymology and the larger Ambrosia Galaxy's favor when the top scientific minds of the Etymology would set up a galactic scale shield-generator using a large array of laser shield-generators across key worlds in the many star clusters orbiting the galaxy within the galactic region in 2,899,617,200 BCE.
With the activation of this shield-generator, the Dryas Collective's forces were unable to enter their war ships into the Ambrosia Galaxy, while military forces in the Dryas Cloud could freely enter the Dryas Galaxy. After this the war would end in Etymology victory. After the the Dryas Galactic War, the shield-generator would be deactivated so Etymology colonists could move in between the two galaxies.
After the Etymology was destroyed in the Ambrosia Galaxy by their A.I. hive-mind, the C.Y.R.E.X. Those who remained in the Dryas Galaxy remotely activated the shield-generator, trapping the C.Y.R.E.X. within the Ambrosia Galaxy. They would remain trapped within the galaxy for hundreds of millions of years. During their imprisonment within the galaxy, their creators would be destroyed completely during the Final Ancient Ambrosian War on 600,000,000 BCE.
However, in 10,265 CE, the Confederacy of Borealis would launch the project: "the Great Expansion." This was an attempt to spread humanity's reach in the universe and as such the Thavma Assemblage galactic neighborhood was chosen. By popular vote, the Ambrosia Galaxy would be chosen as the first galaxy for this attempt. Thankfully for the Confederacy, their Wormhole Drive's technology were able to disrupt the shield-generator. This made the new Human Alliance of Ambrosia complete unaware of the shield-generator's existence.
That was until its successor, the Ambrosia Alliance of United Systems found them on worlds across the Dryas Cloud throughout the 30,000 CEs. After realizing their purpose, they continue to keep the shield-generator activated to keep the C.Y.R.E.X. trapped within the galaxy.