The universe is incredibly old, astoundingly vast and populated by trillions of planets -- so where are all the aliens? Astronomer Stephen Webb has an explanation: we're alone in the universe. In a mind-expanding talk, he spells out the remarkable barriers a planet would need to clear in order to host an extraterrestrial civilization -- and makes a case for the beauty of our potential cosmic loneliness. "The silence of the universe is shouting, 'We're the creatures who got lucky,'" Webb says.
Want to help shape TED's shows going forward? Fill out our survey!
For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch.
Interested in learning more about upcoming TED events? Follow these links:
TEDNext: ted.com/futureyou
Hosted on Acast. See acast.com/privacy for more information.
Senaste avsnitt
En liten tjänst av I'm With Friends. Finns även på engelska.