Star JD 107109 Location Lyra Type KV5 Luminosity 0.3 x Sol Galactic xyz 421.62 786.44 345.83 Right ascension 18h19m0.4s Declination 34°26'07.0" Distance from Sol 957 ly
The planet Tartarus was named after the Hell of Greek mythology, due to its hostile terrain and climate. For most of the planet's decades-long terraforming process, twenty million colonists and subsequent generations resided in the Black Tower - a vec-constructed arcology 16 km high.
Despite its imposing, gloomy appearance, the Black Tower boasted a high and comfortable standard of living. It is now a popular tourist attraction and historical monument, an outstanding example of the particular variation of Maximal Architecture found in this volume.
Before terraformation, Tartarus was a cool terrestrial world with extensive ice cover and without free oxygen. Today it holds around a billion modosophont citizens, a mid-population, mid-tier tourist attraction, like the nearby world New Dumont (13 light years distant).