Subspace axis
A subspace axis is a central component of the stability of a wormhole.

In 2373, two Ferengi, Arridor and , emitted a graviton pulse near the Delta Quadrant terminus of the Barzan wormhole, an act which had the effect of knocking the wormhole off of its subspace axis, causing both ends to shift positions randomly. ()

de:Subraumachse
fr:Axe subspatial
axis