In the follow up episode "Journey's End" (2008), it is revealed that the stolen planets are required as a power source for Davros' ideal final solution: the Reality Bomb, which produces a wavelength that would cancel out the electrical field binding atoms to reduce all life outside the Crucible into nothingness in both his universe and countless other realities. But Davros learns too late that Dalek Caan, who came to the realisation of his race's atrocities as a consequence of saving his...