After Novus started to become uninhabitable as People of Novus began to out several expeditions to several dozen other worlds suitable for shallow several off-world colonies after they learned of the Novus was destroyed by a black hole. Expeditions found several worlds and began to build their colonies with the help from Novus only until Novus' Stargate was lost in a lava flow. (SGU: "Common Descent", "Epilogue", "Blockade")