So I was playing a large random map, got my explore on and had my choke points mapped out, when a relatively undefended planet behind my defensive grid was attacked by a hostile force. While I successfully defended it thanks to a nearby fleet that happened to be a few stars over, after running them out of that gravity well, they retreated to a large red sun then jumped from there along a phase lane I couldn't see to somewhere.
My question is if certain stars act as wormholes in addition to wormholes? I can only assume those ships were jumping to another star system based on their behavior and not showing up on any other surrounding system that I had ships at / controlled.
Anyone else experienced this?