[first lines of season 3]
Narrator: A Nebula in the great Galaxy. It has a diameter of 100,000 light years. It is 15,000 light years thick. It contains more than one billion fixed stars. In this Nebula, as in all others, new stars are born and old stars die. Although the Universe itself may be immortal, each star in the Cosmos has its own fate. Born of cosmic dust, it can return to cosmic dust. The planet Earth is no exception. Now Earth is threatened with extinction not in the Universe's natural scheme of life and death, but by a powerful and seemingly invincible force of evil meant on the destruction of our entire Solar System.