About Cosmos: A SpaceTime Odyssey Season 2, Episode 2 : The Fleeting Grace of the Habitable Zone

There is no refuge from change in the cosmos. There will come a time in the life of the sun when Earth will no longer be a home for us. Explore the story of our ancestors who rose to a comparable challenge, as well as a long-term vision of our future on other worlds. Guest Stars: Carl Sagan, Nick Sagan, Clinnette Minnis, Shereen Balles, Kapeneta Te'o-Tafiti, Elizardo Torrez, Sasha Sagan,