The amount of [[Artikybahl Device|Artikybahl Devices]] has been finite since at least the [[Ceaseless Fray]] The majority of these devices are installed in Transit Rings. These are located at the [[L2]] point near most habitable planets (one per system at most). Many new rings use Artikybahl Devices scavenged from old abandoned rings within the bounds of the [[Stellar Decay]]. The [[ICL]] and later [[EBRIS]] were responsible for the majority of early expeditionary missions to recover them. Transit Rings are all very similar at about 1 kilometer in diameter. More than adequate for the largest of human ships to pass through. The rings also double as communication nodes for the [[HubComm]] network. Portals can be opened as often as 30 minutes for normal operation and remain open for about 5 minutes. These durations can be extended if needed. >[!info] >So far, ground-based portals haven’t been made stable, and their event horizons are imperfect. This has made research into such, very dangerous. > >They suffer the same issue as [[Transit|transits]] deep within the galactic core. *[[Gravitational Noise]]* complicates [[Navigational Mathematics]] and reduces the efficacy of portal containment (via the *event horizon*). Ordinary planetary gravity is considerably higher than anywhere in space. > >It is rumored that [[Nordmauer Industries]] has been attempting to improve these portals. Transit Ring in space ![[Transit Ring.jpeg]] Ground based portal ![[Transit Portal (ground based).jpeg]]