User blog comment:The Milkman/Indoctrination Theorists Say the Darndest Things/@comment-3469974-20121021084225/@comment-24174486-20121022190916

And did Kenson know about the Crucible, or how it worked? Did she say that after learning about the Crucible and its function.

Unless we have evidence to support the idea that the Crucible's activation would cause a supernova from the mass relays, there's no reason to argue that it would. Given the impact numerous supernovas throughout the galaxy would have, it's conceivable that the civilizations that constructed the Crucible made it so that it wouldn't destroy the galaxy.