Fold Beacons

devices that allow vessels to traverse Fold Space to specific points in true space without becoming lost.

As there is no natural way to navigate while in Fold Space, the settled portions of the galaxy rely on Fold Beacons to get from point to point (It was the destruction of the Terran Beacon and several smaller way-beacons that lead to the loss of humanities birth world during The Breaking).
Fold Beacons are usually planet based Marigold Devices transmitting a signal into Fold-Space (often carrying local news and bulletins embedded in the signal)

Fold Beacons

The Stars Beyond Liam