Maybe it's "massive photonic activity", accompanied by a modicum of FTL emissions that weren't mentioned because they were far less prominent?"Massive photonic activity."
Bright light. The Beacon of Kahless, or whatever.
Has anyone told the Klingons that it will be hundreds of years before most if their brethren see it?
Well, I'm sure that this is one bit that they will explain after the commercial.
Yeah, we'll see.
