Cosmos: Possible Worlds Season 1 Episode 11 The Immortals

Cosmos: Possible Worlds is a documentary series that explores the mysteries of space, time, and our place in the universe. In season 1 episode 11, titled "The Immortals," viewers are taken on a journey through time as host Neil deGrasse Tyson delves into the concept of immortality.

The episode begins with a discussion of the ancient Greek myth of Tithonus, a mortal man who was granted immortality by the gods but forgotten and left to suffer eternal old age. Tyson uses this story as a jumping-off point to explore the desire for immortality and the scientific advancements that may one day make it possible.

Tyson introduces the idea of biological immortality, the ability for cells to divide and regenerate indefinitely, and shines a light on the creatures on Earth that exhibit this trait. He visits the Turritopsis dohrnii, a small jellyfish that can revert back to its juvenile form when under stress, effectively making it biologically immortal. Tyson cites the jellyfish as an example of how science is slowly unraveling the secrets of immortality.

Moving beyond biological immortality, Tyson delves into the concept of digital immortality, the idea that our consciousness can be uploaded into a digital form and preserved forever. He speaks with experts in the field of artificial intelligence and virtual reality, who are working to create digital avatars that can carry on a person's memories and personality after they pass away. Tyson notes that while the idea of digital immortality may seem far-fetched, it is becoming increasingly plausible as technology advances.

The episode also explores the societal implications of immortality. Tyson discusses the possibility of a world in which only the wealthy or powerful can afford to achieve immortality, creating a class divide that could lead to chaos and unrest. He also speaks with cultural historians who note that the desire for immortality has been a driving force behind many of civilization's greatest achievements, from art and literature to scientific breakthroughs.

Throughout the episode, Tyson presents both the pros and cons of immortality, asking viewers to consider what it would mean for humanity if we were able to achieve it. He notes that while the concept of immortality may seem fantastical or even terrifying, it has been a fundamental part of human existence for as long as we have been conscious of our own mortality.

In typical Cosmos fashion, "The Immortals" is a visually stunning and thought-provoking exploration of one of humanity's greatest mysteries. Tyson is a charismatic and engaging host, able to distill complex scientific concepts into understandable, relatable terms. Fans of the Cosmos franchise will not be disappointed by this latest installment, and newcomers will be drawn in by the show's stunning visuals and compelling subject matter.