The Astral Plane
Aliases The Astral Sea, Sea of Siberys
Time Timeless
Source Eberron Campaign Setting, pg. 92

The various planes of Eberron all travel within the Astral Plane. All the major planes of Eberron orbit Eberron, which sits at an intersection of the Astral Plane, the Ethereal Plane, and the Shadow Plane. The Astral Plane touches all the planes, and serves as a means to travel between those planes.[1]


The Astral Plane is a great silvery sea, sometimes describes as a starry sky behind the starry sky of the world. Travel throughout the plane is at the speed of thought. The planes float throughout the Astral Plane, and the stral Plane serves as the conduit for summoners when they wish to summon extraplanar creatures. Unknown to most, the Astral Plane does indeed have a border, a boundary of utter darkness called the Outer Darkness. Some believe the Dark Six are trapped beyond the Outer Darkness. No mortal has traveled beyond the Astral Plane, though.[2]



  1. 1.0 1.1 1.2 Eberron Campaign Setting. Keith Baker, Bill Slavicsek, and James Wyatt (2004). Wizards of the CoastISBN 0-7869-3274-0.
  2. 2.0 2.1 2.2 Player's Guide to Eberron. James Wyatt, Keith Baker, Luke Johnson, Steven Brown (2006). Wizards of the CoastISBN 0-7869-3912-5.
  3. Explorer's Handbook. David Noonan, Rich Burlew, and Frank Brunner (2005). Wizards of the CoastISBN 0-7869-3691-6.
The Planes of Eberron
The 13 Major Planes: Daanvi · Dal Quor · Dolurrh · Fernia · Irian · Kythri · Lamannia · Mabar · Risia · Shavarath · Syrania · Thelanis · Xoriat

Fundamental Planes: The Astral Plane (Siberys) · The Material Plane (Eberron) · Elemental Chaos (Khyber)
Transitive Planes and Demiplanes: The Ethereal Plane · The Shadow Plane · Baator