Subspace River
The sector of space that the 52nd Fleet now inhabits is one filled with mysteries and danger. Every part of the 52nd fleet has been moved even further out by way of the Subspace river, to an area of space first defined and noticed by Starfleet Explorers because of a Subspace River Terminus that forms there, a mystery alone that calls for explanation. The area of space itself is rugged, unknown and inviting. There is evidence of several peoples previously un-encountered, of resources in plenty and mysteries in the deep of space just crying out to be explored.
Many systems have been probed already and some have shown interesting preliminary results. There is a system at the heart of this sector that has shown power and other industrial indicators although no starships have been able to get to this system thanks to some kind of protection or barrier around it.
Other systems show more evidence of an advanced species but no sign of them can be found, a through investigation and exploration of this area has been ordered.
Spacedock Phoenix is also located in this general area, in a very quiet and secret system filled with natural radiation and a high degree of asteroids in which to place orbital defence platforms.
It is, altogether, and interesting place to be.