The third planet blocked a view of Zeos from Atrios and vice versa. The Doctor destroyed the Planet of Evil by rerouting missiles fired by the marshal originally directed at Zeos. (TV: The Armageddon Factor) Without the energy of the segment to keep her together, Astra's role as the sixth segment was passed on to Romana after the latter's regeneration. Astra began to unintentionally drain the life-force from her subject Atrians, causing the extinction of the Atrians. (AUDIO: The Chaos Pool)