Angelii Nebula

The Angelii Nebula is a large oddly shaped structure of gas in the Outer Territories of the Orii Cluster.

Although it's entire origin is unknown, it is believed that the Angelii used to be comprised of primarily more transparent gasses that were significantly smaller than it is today. It is believed that when the mysterious alien race that created the Bonarsi were still present in Orii all that time ago, and most of the known races didn't even exist yet, they were experimenting with a new type of interstellar weaponry. We believe the Angelii Cluster is that weapon, as there are derelict structures near the edges of Angelii which are still being consumed by it's ever-growing spires. Why they detonated this weapon in Orii is unclear, though most believe it was simply to test it. Though there are several stars within the nebula, none are bright enough to shine through the thick and noxious gasses that comprise it.

Additional Information; Ruins of nearby stars indicate that in the Angelii Nebula was a home-world for an ancient race, one that suffocated within the gas cloud, It could be possible the ancient race detonated it to test it on live subjects.

Many believe it is on purpose, as their few colonies they had showed signs of orbital bombardment with little ruins of their history surviving.