Silentium's creators

The creators of the robotic Silentium are a long-extinct species of sapient, organic lifeforms with a radially symmetrical body plan, similar to a starfish. Native to the same unnamed galaxy from which sprouted the Yuuzhan Vong and the Abominors; the Silentium's creators ended up wiped out due to radiation emissions from a supernova. Their creations not only outlived them but also went on to form their own interstellar empire and even travel to, and establish colonies in, a different galaxy.