Galaxy-Spanning Passive Ability

Hey guys, quick question for anyone who might have an answer.  One of the species in the mod I am making has a large titan-class ship called the Mothership that the gameplay of the entire faction revolves around.  One of the most important central tenants of the vessel is that while alive, it provides a passive buff to combat performance to all vessels belonging to the faction in the galaxy, but if it is killed, it induces a MASSIVE debuff for all ships of the faction that still live that severely impedes their ability to perform their tasks and will not be removed until a new Mothership is assembled.

This is all well and good and the ability functions perfectly... except for one problem.  I cannot figure out how to make the Mothership's ability span more than a single gravity well.  Is it even possible?