The guy in charge of Arek’Jaalan went into wormhole space at some point, and then later his…I want to say Helios turned up unpiloted somewhere in a wormhole. Capsuleers being what they are shot it on site and among the wreckage was an item pertaining to trinary data, though no one knew what it was for at the time.
Actually, hold on, I found the related article. Have a read here.
There’s more on the whole situation here if you enjoy lore rabbit holes.