Maia Nebula around the Pleiades star cluster

The Pleiades Nebula, also known as the Pleiades, the Seven Sisters, and Messier 45, is an open star cluster located in the constellation of Taurus. It is 384 light-years from Sol.[1] Around the Pleiades star cluster is a reflection nebula. It is caused by dust reflecting the blue light of the hot, young stars.[2] The nine brightest stars of the Pleiades are named after the Seven Sisters of Greek mythology and their parents: Alcyone, Atlas, Celaeno, Electra, Maia, Merope, Pleione, Sterope (Asterope), Taygeta.


The region became a major focus of public and scientific attention in 3301, after it was discovered that newly-discovered alien objects were transmitting signals to the Merope system. Obsidian Orbital was constructed in Maia later that year, becoming the first starport located in a nebula and paving the way for further colonization. The discovery of Alien Structures and Meta-Alloys in the region provoked a brief gold rush and proxy-war between the Federation and Empire. Following additional Thargoid-related discoveries and encounters in 3302 and 3303, such as Thargoid Probes, Hyperdictions, and Thargoid Surface Sites, the Pleiades have borne the brunt of a Thargoid incursion that has destroyed Federal and Imperial military fleets, crippled civilian Megaships, and severely damaged numerous stations, resulting in thousands of human casualties.

List of Inhabited Systems

Pleiades Nebula Colonies

All systems listed below are located within an approximate 30 ly radius around Maia, the unofficial capital of the Pleiades.

System Allegiance Stations and Surface Ports
Maia Independent Obsidian Orbital
Darnielle's Progress
Maia Point
Moni's Hub
Palin Research Centre
Pavlou Keep
Asterope Independent Copernicus Observatory
Atlas Independent Cyllene Orbital
Celaeno Independent Artemis Lodge
Delphi Independent Donar's Oak
The Oracle
Electra Independent Cavalieri
HIP 16753 Independent Goya Landing
Liman Legacy
HIP 17225 Federation PRE Research Base
HIP 17497 Independent Bao Landing
HIP 17692 Federation Blackmount Habitation
Blackmount Orbital
HIP 17694 Independent Hudson Observatory
HIP 17892 Independent Kamov Survey
HR 1183 Independent Arc's Faith
HR 1185 Empire Ceres Tarn
The Indra
Merope Independent Alcazar's Hope
Omega Prospect
Reed's Rest
Pleiades Sector DL-Y d65 Independent Agricola's Ascent
Pleiades Sector GW-W c1-13 Independent Cornell's Garden
Pleiades Sector HR-W d1-41 Independent Malthus Terminal
Pleiades Sector HR-W d1-74 Independent Corrigan Terminal
Pleiades Sector HR-W d1-79 Independent The Penitent
Pleiades Sector IH-V c2-5 Alliance PRE Logistics Support Gamma
Rix Depot
Pleiades Sector IH-V c2-7 Independent Borrego's Vision
Pleiades Sector IH-V c2-16 Federation PRE Laboratory
TII Research Facility
Pleiades Sector KC-V c2-4 Independent Oort Orbital
Pleiades Sector KC-V c2-11 Independent Kipling Orbital
Pleiades Sector PD-S b4-0 Independent Ieyasu Dock
Pleione Independent Stargazer
Taygeta Independent Titan's Daughter

Near-Pleiades Colonies

All systems listed below are located in an approximate zone between 44 ly and 175 ly outside of Maia. Most are situated directly between the Pleiades Nebula and the Core Systems.

System Allegiance Stations and Surface Ports
42 n Persei Independent Bennington's Rest
PRE Logistics Support Alpha
Arietis Sector XE-Z b4 Independent PRE Logistics Support Beta
HIP 16813 Independent Sisters' Refuge
HIP 17044 Independent Dionysus
HIP 17519 Independent Pirate's Lament
HIP 19072 Alliance Cooper Research Centre
HIP 22460 Independent Overlook
Hyades Sector AB-W b2-2 Independent Exodus Point
PRE Logistics Support Delta
Pleiades Sector AB-W b2-4 Empire Noctrach-Ihazevich Research Facility
Pleiades Sector HR-W d1-57 Federation Cleaver Prospect
PRE Logistics Support Zeta
Pleiades Sector JC-V d2-62 Independent Asami Orbital
PRE Logistics Support Epsilon
Pleiades Sector OI-T c3-7 Empire Orcus Crag



  1. Maia in-game description
  2. Gibson, Steven J.; Nordsieck, Kenneth H. (2003). "The Pleiades Reflection Nebula. II. Simple Model Constraints on Dust Properties and Scattering Geometry". Astrophysical Journal589: 362–377
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