It's an idea yet to be implemented, and I'd rather think these mods would need to tap into a galacticraft API - or there would be a need of a more general API.
You'd need a function to tell you: dimension x can send to dimension y for user u, communication type {chat, item, energy, fluid, data(opencomputers), …}, and the result may be cached for z ticks (e.g. if you call it one tick before the moon sets, you the result may be used for one tick). Also you'd need a way to hook into that function, GC would use that and check for constellations.