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In the year2373 it was discovered that Thallon's great wealth of materials and geothermal energy were the result of the world being a sort of "egg" or "nest", and that a Great Bird of the Galaxy had been gestating or hibernating within the planet. There had been a steady decline in the habitability of the world for over a decade prior, leading to a great deal of emigration and eventually, the collapse of the Thallonians' empire. The planet was destroyed as the Bird emerged, killing all who had remained. The surviving Thallonians founded a new homeworld on New Thallon. (NF - New Frontier Omnibusnovels: House of Cards, Into the Void, The Two-Front War, End Game)