The Azlesa Expanse was a region of space, an interstellar expanse and nebula located in the B'Moth sector of the galaxy's Beta Quadrant. In the 25th century, this expanse was inside the space claimed by the Klingon Empire. (STO - Common Ground mission: "Azlesa Expanse Exploration")
History and specifications
By 2410, astrography placed the expanse within the borders of the B'Moth sector, and displayed it as a green-yellowish nebula. It was located close to the ChoS Nebula. The region became accessible to Starfleet and the Romulan Republican Force. (STO - A New Accord mission: "Azlesa Expanse Exploration")
The interactions with the region changed further. Ships of the Khitomer Alliance would dispatch duty officers on missions to the expanse, rather than venturing into it directly. The duty officers conducted missions of diplomatic and scientific nature, and assisted with the colonisation of the Azlesa Expanse. (STO - The Iconian War mission: "Azlesa Expanse Duty Officer Assignments")
|Star clusters and nebulae in Star Trek Online|
|Alpha Quadrant||Betreka Nebula • Rolor Nebula • Zenas Expanse|
|Beta Quadrant||Afehirr Nebula • Arucanis Arm • Azlesa Expanse • Azure Nebula • B'Tran Cluster • Briar Patch • Celes Nebula • ChoS Nebula • D'kel Star Cluster • Delta Volanis Cluster • Eridan Belt • Eridon Nebula • Great Bloom • Hromi Cluster • Kahless Expanse • Khazan Cluster • Mutara Nebula • Paulson Nebula • T'Kanis Nebula • T'Ong Nebula • Yan Nebula|
- Before the Season 9.5 update (July 17th, 2014) in Star Trek Online, the Azlesa Expanse was located just outside the border of the B'Moth sector, in deep space.