The Subterra Period represents an era within the galaxy, spanning from 8000 BBY to 7000 BBY. During this epoch, the southern quadrant of the galaxy underwent extensive cartographic charting. The world of Malastare functioned as a pivotal point for brief segments of hyperlane routes, also referred to as praediums. Furthermore, the construction of supply routes connecting the galaxy to the Rishi Maze took place.
The swift expansion, however, resulted in rampant lawlessness throughout the Rim territories, and Coruscant gradually relinquished its authority over these newly acquired regions. It is believed that this contributed significantly to the Second Great Schism occurring in 7003 BBY, an event that subsequently triggered the commencement of the Hundred-Year Darkness.
- 8000 BBY The Subterra Period commences.[1] Malastare is integrated into the Republic as a member.[1] The Republic establishes a base on Malastare's eastern continent, leading to the Gran species establishing settlements and achieving political dominance.[6] Corellian pirates make the discovery of Goroth Prime.[7] The star Colu expands, engulfing the planet Clak'dor I. (Approximate date)[8]
- 7811 BBY The Waymancy Storm unfolds—a conflict pitting the Galactic Republic against the Signatories of Waymancy. The Republic emerged victorious, reverse-engineering the Sisters of the Machinesmith's power generator technology, leading to the development of significantly more potent turbolaser weaponry.[9]
- 7700s BBY Verpine master crafter Lyns Skutroo pioneers the squintpipe process for power generators, using reverse-engineered Waymancy Storm technology. This development made shielding technology more important in combat, evolving it from basic protection against environmental effects.[9]
- 7500s BBY Further refinement of the squintpipe process enables improvements in shield power and regeneration capabilities.[9]
- c. 7328 BBY The warlord Shey Tapani consolidates several Human colonies under the banner of the Tapani Empire.
- 7003 BBY The Second Great Schism erupts as a number of Dark Jedi secede from the Jedi Order.[3]
- 7000 BBY The Hundred-Year Darkness dawns following the Second Great Schism.[10] The Manderon Period starts, marking the conclusion of the Subterra Period.[1]
- Geonosis and the Outer Rim Worlds
- " Heritage of the Sith " — Star Wars Insider 88
- Jedi vs. Sith: The Essential Guide to the Force
- The Complete Star Wars Encyclopedia
- The Essential Atlas
- Galaxy at War
- The Essential Guide to Warfare