Jump node

A jump node is a place where the second type of subspace jump, the intersystem subspace jump is possible. Jump nodes are shown in-game as a wire frame HUD diagram. Without assistance, it is impossible to locate a jump node visually as they are invisible to the unaided eye.

Most jump nodes are unstable and cannot be traveled by GTVA ships. These nodes can be stabilized permanently (or for a very long time) by Knossos portals. It is also thought that Shivan ships can traverse unstable nodes more easily than Terran and Vasudan ships.

It is theorized by fans that jumping near to a jump node is impossible because it would make escort missions pointless. However, there is no particular in-game confirmation for this. A solid conclusion may be impossible to draw given the inconsistency of FS canon.