Image from Wyrmshadow
- Gaia Engelbrech - Text by Thorbjørn Steen
A virtual world located inside a moon node near the fringe of Keterist space.
- Galbydeia - Text by M. Alan Kazlev
MPA Middle regions system, home to the megascale engineering project known as the Galbydeia Torus.
- Galbydeia Torus - Text by Anders Sandberg
Mutual Progress Association space-time engineering project.
- Galilean Moons - Text by Stephen Inniss
The four largest moons of Jupiter: Ganymede, Io,Callisto and Europa. They were discovered by Galileo in 359 BT (1610 c.e.), and became important industrial and population centres in the Interplanetary Age.
- Gamma Hyeidon IV - Text by M. Alan Kazlev
Center for Galactic Folklore and Mythopoesis.
- Gammergan - Text by Steve Bowers
Former lost colony in the MPA Ophiuchus Region.
- Ganymede (Sol V - iii) - Text by M. Alan Kazlev
Major satellite of Jupiter.
- Garell - 70 Ophiuchi II - Text by M. Alan Kazlev
Gas giant, home of a number of posthuman keterist clades. See also Barawatten.
- Garlin - Text by M. Alan Kazlev
Negentropist world in the vicinity of Lynga 7 - home of Yarr Mak Po 4+ and the original YarrMakist doctrine.
- Gatewai - Text by M. Alan Kazlev
Shared Metasoft-NoCoZo world in the Inner Sphere - famous for an appearance of the so-called "Femtotech Messiah".
- Gavit - Text by M. Alan Kazlev
Resource poor Outer Volumes system.
- Gayomart Protectorate, The - Text by James Ward
Stellarised Superjovian system in the Canis Major outer Volumes.
- Gegton X - Text by M. Alan Kazlev
Theocratic bureaucracy, one of the Five Capitals of the Negentropy Alliance.
- Germyn - Text by M. Alan Kazlev
Brown dwarf cluster; 8 LY from Ridgewell, occupied by Negentropist forces during the Version War.
- Ghane III - Text by Anders Sandberg
Gaian Type world originally of Hyl Op culture, now Solar Dominion
- Gilboa Reach - Text by M. Alan Kazlev
Important STC outpost and stargate plexus in the Serpens sector, consisting of a large L5 orbital swarm of habitats and a terraformed world, Gilboa, whcih is distinguished by its unusual and lush vegetation (a result of an earlier terraforming attempt where gengineered terragen moss and lichen hybridized with indigenous prokaryotes).
- Gillbank - Text by M. Alan Kazlev and Steve Bowers
Crucis Corridor Negentropist world subverted by the Neutral Way, declared itself the Disarchy Alliance, led by the Postscripts of Randomness, as a deliberate parody of Negentropism.
- Gliese 581 - Text by Steve Bowers
Multiplanet system in the Inner Sphere
- Gliese 667 - Text by Mark Ryherd
A triple-star system in the Inner Sphere
- Glim - Text by Mark Ryherd
Member system of the Doran Empire
- Golden Mesa - Text by M. Alan Kazlev
YTS 2293-3800031 X - near-periphery Outer Volumes world, location of The Circle of Time artifact.
- Goldilocks (70 Virginis b) - Text by Steve Bowers
Warm Jovian, named during the Information age. It was wrongly as it turned out, as the moons of this world are all too warm for easy terraformation.
- Googlehertz Virchdrome - Text by M. Alan Kazlev
Panvirt dyson, part of the Union of Virtual Aipolities , site of the famous "Meeting at Googlehertz" which established the Central Alliance.
- Gordelpus - Text by Anders Sandberg
Central MPA system, colonized by the Kathelian Confederacy in the 2700's.
- Gorgos - Text by M. Alan Kazlev
22 Lyncis, an industrial system colonised during the Dionysian Erotocracy by Gorgos-Jemsys Networks. It developed into an isolationist corporate-hedonist pharmacracy culture that persists to this date.
- Goto 34-394332 - Text by M. Alan Kazlev
Former home of the Mother of Machines. At the MPA-Negentropic border.
- Greesob, Greesob Sector - Text by Anders Sandberg
Located in the Cepheus expansion direction. The origin of the name is the Anglic "greedy sob", a highly derogatory term for an acquisitive being. This became a nickname of Eduaria "greesob" Ilyantov, a First Federation relativist trader. When his ship company several generations later was hired as linelayers for the Cepheus development, they took the chance of naming a few systems for their ancestors. The Greesob system would eventually become a significant local administrative center, eventually naming the entire sector.
- Greylag - Text by M. Alan Kazlev
Negentropy theocratic-monastic world; one of the Five Capitals of the Alliance.
- Grignard - Text by Steve Bowers
World in Puppis where the copygroup lifestyle has been particularly successful
- Gripler - Text by Steve Bowers
Dominion World- location of the Signal Lamp Incident.
- Gritwald - Text by M Alan Kazlev
Resource-poor Centaurus sector Negentropist system with the ruins of a Paradigm dyson shell.
- Gshru - Text by M. Alan Kazlev
Home to a mostly seafaring abdicator civilisation of hermaphrodites, in NoCoZo territories. It is is apparently slowly developing on its own inside the restriction swarms surrounding the system.
- Guanche - a Lost Colony - Text by Steve Bowers
Colony in the Cygnus Expansion which was lost when that empire dissolved and regressed to Bronze Age technology
- Guiuu-89 - Text by M. Alan Kazlev
Out-of-the-way habitat in the Metasoft Pleiades, during the ComEmp period the great vec poet and memeticist Inner Enrastered Link Connection settled there.
- Guo-Shou Jing - Text by M. Alan Kazlev
Penglai Outpost settlement in Giclas 258-33 Main Belt.
- Gyanti System - Text by M. Alan Kazlev
Populous system in the Utopia Sphere with a large population of plant provolves
- Halcyon (20 Leonis Minoris) - Text by Todd Drashner
Inner Sphere system. Halcyon was an early member of the MPA.
- Halsokallan - Text by M. Alan Kazlev
Solar Dominion system in the Perseus Arm, fallen to the Amalgamation in 6760.
- Hammerstein - Text by Steve Bowers
LinnEnt colony, populated by engenerator technology
- Hansin - Text by M. Alan Kazlev
(YTS 2193 098 170 - I); Inner Sophic League Mercurian-Type planet populated by a few monk-vecs and a single ex-sunminer. The planet is famous for the orbital New Vulcan.
- Harbinger - Text by M. Alan Kazlev
Fractal Dyson, Nuiarkady Sector, Zoeific Biopolity.
- Harmonic-Resonance - Text by Todd Drashner
Double planet in the Sophic League Middle Regions terraformed by Edenese superiors in 2805.
- Harri Ho (cybercosm) - Text by M. Alan Kazlev
Cybercosm in the MPA, part of the Cyberian Countzerogibson Band of Computronium Civilizations, Tonkin Dyson, Djed Sector. Named after Harri Ho
- Haydrik Habitat - Text by Ben Higginbottom
Independent Banks style orbital sharing a system with the Negentropist Alliance.
- Hazard Hope - Text by M. Alan Kazlev
Located in the near outer volumes Scorpio sector - near the junction of Negentropist and MPA empires and the STC volume, Hazard Hope has been described as one of those unhappy border systems that everyone has a turn at claiming and ruling. Currently it is MPA, but has links and a wormhole to each of the three regions. There has been talk for some time of making it a Free Zone but each attempt is undermined by one or the other of the sephirotic proxy AIs.
- Heartland - Text by M. Alan Kazlev
Capital of the Communion of Worlds.
- HeavenWatch - Text by Darren Ryding
Vast Homo Superior habitat cluster in Archaipelago, ruled by the archailect UrchinStar. Descended from a splinter faction of the Argus Array.
- Hekufast - Text by M. Alan Kazlev
Home of the Deines, high socioeconomic subclade of Radiation Nation.
- Helios A, B, and C - Text by M. Alan Kazlev
Intra-Mercury Orbital bands, SolSys.
- Helix Orbital - Text by M. Alan Kazlev
Orbital complex in the Aries Vector cluster; origin of the vec Kja Observance religion.
- Henon - Text by Steve Bowers
Outer Volumes planet with independently sentient cities
- Henson - Text by Steve Bowers
Panthalassic waterworld containing extensive water-cooled cybercosm
- Hethus V - Text by M. Alan Kazlev
NoCoZo world where mecha combat by pregnant human females is allowed in the gladiatorial arenas, such combat is generally given a separate class since it carries such an advantage (thanks to increased reaction time). And even on Hethus the rules limit female baseline pilots to a maximum of three full combat-pregnancies. Any additional pregnancies must be accompanied by a leave of sabbatical from the arena (old law).
- Hhrraiirah - Text by M. Alan Kazlev
(Sophic League) The home of the Hrruuaiih Sufant clade.
- Hibra - Text by M. Alan Kazlev
Crucis Corridor world, where Stig Ranes is revered as a martyr and culture hero.
- Hiederia - Text by M. Alan Kazlev
A backwater system in the Perseus Rift, shared between the Solar Dominion and an Independant postneumann civilization
- Hightower - Text by Todd Drashner
Primary world within the Deeper Covenant Realm. A gas-giant world with megascale dynamically supported towers.
- Himmelsschmiede - Text by Martin Andreas Cieslik
Heavy industrialized system in MPA space - One of the largest Deep Well industrialized Zones that ever existed in the terragen sphere.
- Hinton - Text by M. Alan Kazlev
Newly rich developing outer sphere world, important regional center, linked to main wormhole nexus. Popular with a number of clades, including young House Stevens radicals disillusioned with "House Ridgewell".
- Hipparkos - Text by M. Alan Kazlev
Important NoCoZo system
- Hoopworld - Text by Steve Bowers
Torus shaped metastable artificial solid planet
- Horsehead Nebula - Text by Steve Bowers
Dark Nebula in Orion
- Hoshanti's Star - Text by M. Alan Kazlev
Solarian designation for Gavit.
- Huan Gao - Text by Steve Bowers
Smoke Ring (Niven Cloud) in the Utopia Sphere
- Huanghua - Text by Steve Bowers
Huanghua, Yellow Flower; part of the Penglai Empire
- Hubble's Variable Nebula - Text by M. Alan Kazlev, amended by Steve Bowers
Variable Nebula: 2.5 Kly from Sol - site of important Metasoft Second Vec War victory over superior biont forces.
- Huycau - Sitr'achra - Text by Radtech497
Binary System with unusual xenosophonts.
- Hwii - Text by Anders Sandberg, M. Alan Kazlev and Steve Bowers
Zeta Tucanae II - The first purely dolphin colony world.
- Hynkarion Cluster - Text by Anders Sandberg
Local name of a small cluster of bright stars in the sky of Sullivan, which was colonized by formerly MPA clades in 5690. The Hynkarion worlds are known for its daring biotechnology/landscaping projects, especially the Monster but also the ice-cities on Alpha Hynkarion II and the sentient mats of Delta Hynkarion IX.
- Hyperion (moon of Saturn) - Text by M. Alan Kazlev
One of the moons of Saturn, Hyperion is the largest-known irregular-shaped body in the Sol System. It has a variable rotational period and a cratered surface.
- Hyperion (world) - Text by M. Alan Kazlev
(formerly Lunth) - Middle Regions world, Sol-ward of the Perseus rift, former capital of the Empires Age Hyperion - Marabi Patha empire.
- Hyttinen - Text by M. Alan Kazlev
Important NoCoZo system.
Text by Orion's Arm Editors
Initially published on 31 December 2007.