In 999.M41, whole swaths of Segmentum Pacificus would suffer from mass uprisings by disgruntled citizens collectively known as the Night of a Thousand Rebellions. Many outlaying planets as well as key worlds such as Darkhold, Minisotira, and Enceladus are swept up in the chaos. Even the Lions Defiant Chapter of Space Marines find their Homeworld the victim of insurgent activity. Since the uprisings began, communication with much of Segmentum Pacificus has been lost.
Notable Other Celestial Objects
- Segmentum Solar - Galactic East
- Segmentum Obscurus - Galactic North East
- Ultima Segmentum - Galactic Far East
- Segmentum Tempestus - Galactic South East