The Celestial Order was born from the Church of the Undying Light, the imperial state faith that taught that Aurelia was a god in its dying. When the star flared and burned the Ring, the Church's most fervent orders declared it judgment: the Throne had become unworthy of the Light, and the Light demanded a cleansing.

The Order has been cleansing ever since. Its zealots believe that the stars themselves command them, and their beam-lances pass through shields like scripture through doubt. They fight in cathedral-ships, heal their faithful mid-battle, and pay any price for righteousness. They believe the next Flare will be Aurelia's final judgment on the Frontier. They are looking forward to it.