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Greyspace is a crystal sphere that is home to the GREYHAWK Campaign Setting, and contains the world Oerth.[1][2][3]


Greyspace is one of the largest crystal spheres yet discovered, with a diameter of 16,000 million miles (25,750 million kilometres).[4] It also features perhaps the widest variety in planetary shapes and types, ranging from standard spherical planets to elongated, irregular and flat worlds, as well as belt and cluster formations.[5] The wildspace of Greyspace is cooler than that of Realmspace, but not as cool as that of Krynnspace. Most sages believe this means Greyspace is younger than Realmspace.[6]


Greyspace is part of a stable triangular configuration in the phlogiston that also includes Realmspace and Krynnspace. Currents within the Flow allow free travel from Greyspace to and from Realmspace, but only one way travel from Greyspace to Krynnspace.[7][8]

Celestial bodies[]

Greyspace is a geocentric system, with the system primary, an earth body known as Oerth, located at the center of the sphere and orbited by the other planets and an asteroid field. This sets Greyspace apart from the vast majority of Known Spheres, which have fire bodies (suns) as their primaries. Most of the major planets orbit in the same plane, except Ginsel and the Spectre, both of which have orbits that are inclined a couple of degrees to the ecliptic.[6]

Oerth (Primary)[]

Main article: Oerth

Oerth is Greyspace's primary and is a size E spherical earth body.[1][9][10]


Main article: Kule

Kule, also known as Celene or The Handmaiden is a size B spherical earth body. It is tidally locked and has no atmosphere.[1][11][12]


Main article: Raenei

Raenei, also known as Luna is a size D spherical earth body.[1][13][14]

Liga (Sun)[]

Main article: Liga

Liga, also known as The Sun is a size G spherical fire body. It has one moon.[1][15][16]

The Grinder[]

Main article: Grinder, The

The Grinder is an asteroid field made up of size B asteroids of various celestial body types.[1][17][18]


Main article: Edill

Edill is a size G spherical air body.[1][19][20]


Main article: Gnibile

Gnibile is a size G spherical air body.[1][21][22]


Main article: Conatha

Conatha is a size C elliptical water body.[1][23][24]


Main article: Ginsel

Ginsel is a size C irregular shaped earth body. It is crescent shaped.[1][25][26]


Main article: Borka

Borka is a size A cluster of asteroids which are all earth bodies. Borka's asteroids have a common atmosphere and variable gravity.[1][27][28]


Main article: Greela

Greela is a size E cluster of asteroids which are all earth bodies. Greela's asteroids have a common atmosphere and variable gravity.[1][29][30]

The Spectre[]

Main article: Spectre, The

The Spectre, or The Wink is a size B flatworld earth body.[1][31][32]

Crystal Shell[]

From a distance, Greyspace’s crystal shell appears utterly flat to observers, due to the sphere’s great size. The exterior surface of the sphere is highly reflective, and on close inspection resembles highly polished steel. From a distance, the surface takes on a shifting, iridescent quality reminiscent of mother–of-pearl. The shell’s silver sheen appears to be shot through with streaks and whorls of subtle pink and blues, with the net effect that from the Phlogiston, Greyspace resembles a massive pearl that appears to float in the turbulent currents of the Flow.

The interior surface of the sphere is as smooth as the exterior, with no discernible ripples or imperfections. However, it is totally non-reflective, and appears night-black as it absorbs all light that falls on it. The surface also has no texture and does not register to the sense of touch, other than as a barrier through which nothing can pass.

Portals giving access to and from the Flow open spontaneously in the crystal sphere, always opening between star-gems. Perfectly circular, most of these portals are small, usually tens of feet across, though a rare few may be larger than 100 feet (30 metres) in diameter. Once every 5 years or so, truly massive portals on the order of several miles in diameter open in the crystal sphere. These ‘major portals’ are exceedingly rare. Spontaneous portals are much more uncommon in Greyspace than they are in Realmspace, and there are probably fewer than two dozen portals open at any one time.[33]


The stars of Greyspace are actually huge, glowing, multifaceted jewels embedded in the material of the shell. The largest of the star-gems are 10 – 20 miles (16-32 kilometres) across, while the majority are smaller than 1 mile (1.6 kilometres) in diameter, with the smallest only a few hundred feet across.

Despite being visible for billions of miles across the sphere, the stars are not overly bright when approached directly, and pose no danger when gazed upon with unprotected eyes. For all their dazzling brilliance, the star-gems do not appear to radiate any heat, and can be safely approached up to 100 feet (30 meters). However, approaching closer than 100 feet (30 meters) apparently crosses some unseen boundary, because the temperature surrounding a star-gem is actually hot enough to ignite or melt any non-magical material. The massive heat of a star-gem will instantly cremate or vaporize any foolhardy explorer that comes too close.[33]

The star-gems form complex yet subtle patterns that straddle the border between order and chaos.[33] Sages from Oerth have identified various constellations that make up the Twelve Lairs of the Zodiac[34], through which the Sun passes as it completes its' annual journey through the sky, They have also named several of the other constellations as well, such as the Druid, the Dancer of Swords, and the Swan.[35]


External Links[]


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 Concordance of Arcane Space Greyspace sidebar, pages 78 and 80
  2. 2.0 2.1 Lorebook of the Void chapter 4 Known Spheres, pages 89-92
  3. 3.0 3.1 SJR6 Greyspace
  4. 4.0 4.1 SJR6 Greyspace Sphere Overview, page 3
  5. Lorebook of the Void Greyspace section, chapter 4 Known Spheres, page 89
  6. 6.0 6.1 SJR6 Greyspace Sphere Overview, page 6
  7. Concordance of Arcane Space The Phlogiston section, chapter 1 Arcane Space, page 11
  8. Concordance of Arcane Space The Flow sidebar, pages 86 and 88
  9. Lorebook of the Void chapter 4 Known Spheres, page 89
  10. SJR6 Greyspace Oerth chapter, pages 7-9
  11. Lorebook of the Void chapter 4 Known Spheres, pages 89-90
  12. SJR6 Greyspace Kule chapter, pages 10-16
  13. Lorebook of the Void chapter 4 Known Spheres, page 90
  14. SJR6 Greyspace Raenei chapter, pages 17-22
  15. Lorebook of the Void chapter 4 Known Spheres, page 90
  16. SJR6 Greyspace Liga chapter, pages 18-31
  17. Lorebook of the Void chapter 4 Known Spheres pages 90-91
  18. SJR6 Greyspace The Grinder chapter, pages 27-32
  19. Lorebook of the Void chapter 4 Known Spheres, page 91
  20. SJR6 Greyspace Edill chapter, pages 33-38
  21. Lorebook of the Void chapter 4 Known Spheres, page 91
  22. SJR6 Greyspace Gnibile chapter, pages 39-42
  23. Lorebook of the Void chapter 4 Known Spheres, page 91
  24. SJR6 Greyspace Conatha chapter, pages 43-47
  25. Lorebook of the Void chapter 4 Known Spheres, page 91
  26. SJR6 Greyspace Ginsel chapter, pages 48-53
  27. Lorebook of the Void chapter 4 Known Spheres, page 91
  28. SJR6 Greyspace Borka chapter, pages 54-59
  29. Lorebook of the Void chapter 4 Known Spheres, page 92
  30. SJR6 Greyspace Greela chapter, pages 60-65
  31. Lorebook of the Void chapter 4 Known Spheres, page 92
  32. SJR6 Greyspace The Spectre chapter, pages 66-70
  33. 33.0 33.1 33.2 SJR6 Greyspace Sphere Overview, pages 3-6
  34. Gary Holian, Erik Mona, Sean K Reynolds, Frederick Weining Living Greyhawk Gazetteer (Wizards of the Coast) ISBN 0-7869-1743-1 Heavens and Oerth section, chapter 1 Greyhawk's World, page 2
  35. Carl Sargent Ivid the Undying (TSR Inc.) North Province chapter, page 56 (unpublished, available online)


Celestial Bodies of Greyspace
Oerth (Primary) | Kule | Raenei | Liga | The Grinder | Edill | Gnibile | Conatha | Ginsel | Borka | Greela | The Spectre
Additional Astronomicals of Greyspace
The Sisters | The Great Sargasso | The Habitat | Dark Stars