Farside is the name given to a previous dominant civilization, and the race that created it. The remains of the Farside Empire are said to be located in an as of yet unexplored region of space.
Farside culture seemed to revolve entirely around the use of galactic energy, much more so than anything seen in the current known worlds. It is known that the people of the Farside were able to travel between planets and star systems without the use of Arch Travel. How this was done is still unknown, as well as most other Farside abilities.
There are still some Farside beings living, although extremely rare and occasionaly secretive, it is common knowledge that they were avian in origin, and were physically capable of flight on some worlds without assistance from technology or galactic energy.