Xi Sector

The Xi Sector (named for Xi Bootis, its border star with the Republic Sector) is a loose grouping of stars in the Orion Spur of the Milky Way galaxy, in the Prime Universe. Taken on a single plane viewed from outside the galaxy, facing toward the core, the Xi Sector is approximately southwest of the Cetian Sector and Republic Sector, southwest of the Praezorian Sector, south of the Machine Sector and south/southwest of Skelow Space.

Main Stars
- Xi Bootis (Border Star with the Republic Sector and an Earth Republic holding)

- Chi Orionis

- Darwin's Star

- 51 Pegasi

- Nu Lupi Lupus

- Iolaus

- Ixion (Xi Ursae Majoris; Star of the Ginali homeworld)

- HR 4587

- Beta Hydri

- Ketos

- Nephele

- Argos

- Alpha Mensae

- 61 Virginis

- Pictor

- Zeta Reticuli

- Zeta Tucanae (Site of an old Cadalian colony and 20 LY from the Cadalian Sector)

Border Stars
The Xi Sector's only known border star is Xi Bootis, leading into the Republic Sector. It is incompletely explored, and, according to the Dakluti, their sector of space is due west of the Xi Sector, most likely off 51 Pegasi, Nu Lupi Lupus, or Iaolaus.

Advanced Civilizations
The Xi Sector does not have an advanced civilization that lives within or that has colonized it; the closest humanoid contenders are the Cadalians, who created a failed colony at Zeta Tucanae, and the Ginali at Ixion, who are space-capable but have not yet discovered hyperspace. They are a friendly species with the Earth Republic, after the ERS Medusa brought them philanthropic aid following an attack by the Dead.

The ERS Medusa discovered several strange beings in the Xi Sector, including the Dead, a possibly trans-dimensional species that alter stars and commandeer dead warships. They encountered Ra, as well as a creator species experimenting with life on entire worlds. Other species have made failed inroads here, including the Dakluti, the Cetians, the Skelow, a sentient Cetacean species, and a species of shapechangers; the remnants and descendants of their failed colonies were all rescued by the Medusa crew.