Where are all the aliens? | Stephen Webb

Where are all the aliens? | Stephen Webb

Author: TED July 19, 2018 Duration: 13:08
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.

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Author: Language: English Episodes: 37

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