Known Galaxies and Galactic Clusters
Larothian Galaxy - This is a large spiral galaxy in the Larothian Group, Arcania Cluster. The most notable races here are lizardmen and nagas. This galaxy also contains the ruins of countless past space empires that are now gone. The Dragon Galaxy is one of the dwarf galaxies that orbits the Larothian Galaxy. The Shimmer is another one.
-- Dragon Galaxy - Spherical dwarf galaxy that orbits the Larothian Galaxy.
-- Shimmer Galaxy (Inznathn Galaxy) - Shimmer is an irregular shaped dwarf galaxy that orbits the Larothian Galaxy.
-- Ehzman Galaxy - Spherical dwarf galaxy that orbits the Larothian Galaxy.
-- Nethran Galaxy - Spherical dwarf galaxy that orbits the Larothian Galaxy.
-- Elkroh Galaxy - Irregular, blob shaped dwarf galaxy that orbits the Larothian Galaxy.
Protharia Galaxy - This is a large spiral galaxy in the Larothian Group, Arcania Cluster. It is the closest full sized galaxy to the Larothian Galaxy.
Death Plant Galaxies - These are a handful of galaxies in the Larothian Group that are infested with deadly plants. These plants actually consume entire planets and star systems.
Mithna Galaxy - This is a spiral galaxy in the Arcania Cluster outside of the Larothian Group. It was was once an illithid feeder galaxy but is now home to hundreds of thousands of liberated feeder worlds.
Utyanahr Galaxy - Spiral galaxy in the Arcania Cluster outside the Larothian Group. It is dominated by thousands of warring grell, beholder and aboleth factions.
Mekulza Galaxy - Spiral galaxy in the Arcania Cluster outside the Larothian Group. It is dominated by thousands of warring illithid factions.
Mikon Galaxy - Spiral galaxy in the the Sculptora Group, which is part of the Virgonia Supercluster. It is this prime material plane's version of the galaxy named NGC 55 in the earth's prime material plane.
Warhaze Galaxy - Spiral galaxy in the Warhaze Group, which is part of the Virgonia Supercluster. It is this prime material plane's version of the Milky Way from earth's prime material plane. This galaxy is the main part of Chaos Space.
Androman Galaxy - Spiral galaxy in the Warhaze Group, which is part of the Virgonia Supercluster. It is this prime material plane's version of the Andromeda Galaxy from earth's prime material plane.
Planets and Worlds Outside the Dragon Galaxy That Are Commonly Interacted With or Are Notable
Outside Any Galaxy
Gygaxia
Shimmer Galaxy
Ekaj
Eirdar
Eli
Norda Star System
Ribbon
Coyl
Larothian Galaxy
Averja
Pyrikohr
Narahgra
Mithna Galaxy
Haratya (Roughly based on Barsoom from the Edgar Rice Burroughs stories)
Kaprinth (Inspired by Caprona from the Edgar Rice Burroughs stories)
Duratria (Inspired by some of the zones in the World of Warcraft)
Hehriya (Inspired by Eternia from the He-Man cartoons)
Mekulza Galaxy
Negderohn (Based on the world from the William Hope Hodgson story "Night Land")
Arcane Space
Oerth (AD&D Greyhawk setting)
Ahber-Torihl (Abeir-Toril, AD&D Forgotten Realms setting)
Kyrnn (AD&D Dragonlance setting)
Same Prime Material Plane but Unknown Galaxy or Far Distant Galaxy
Aryna (Roughly based on Aranna, the world from the video game Dungeon Siege)
Rohylia
Thenegarin
Warhome
Other Prime Material Plane
Mystyra (Mystara, D&D setting)
Pahladya (The world from the Palladium Fantasy setting)
Gohal (Golarion, Pathfinder setting)
Warhammer World (Warhammer Fantasy setting)
Unknown Galaxy or Prime Material Plane
Eberrahn (Eberron, AD&D Eberron setting)
Ah'Brynis (Aebrynis, AD&D Birthright setting)
Athas (AD&D Dark Sun setting)
Planets and Worlds Outside the Dragon Galaxy That Were Once Interacted With But Now Are Destroyed or Unreachable
Draenor (Dra'Ehnyr) (the world from the video game World of Warcraft)
Eahxelekahz (Earth)
Nebulas and Other Features Outside the Dragon Galaxy That Are Notable
Zodian Halo - Several nebula groups and solitary, random stars encircle the Dragon Galaxy like a halo. All of these stars and nebula clusters lie in the empty space outside the Dragon Galaxy and the Larothian Galaxy. They can be seen clearly in the skies of Dragon Galaxy planets like Drav, and many of the stars and nebulas make up parts of the nine zodiac constellations some of the Wyrm's Head worlds recognize.
Spring Cluster - This area is part of the Zodian Halo, and is not inside of any galaxy. It is a cluster of stars and bright nebulas that look like flowers. The entire star/nebula cluster lays in empty space outside of any galaxy, but it is nowhere near large enough to be considered a galaxy itself.
Tornado Nebulas - This is a region of long, thin, white and blue gas nebulas that are part of the Zodian Halo. Looking at them brings to mind rushing air.
Dark Nebulas - These are black nebulas of dark, light absorbing gasses. They are part of the Zodian Halo. They are also full of magic-dead zones and empty voids.
Sparks of Vulcaner - These are a region of bright reddish and yellowish stars that are part of the Zodian Halo.
Explored Star Systems in the Dragon Galaxy