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TED Talks: Season 2018

2018x221 Stephen Webb: Where are all the aliens?
TV-PG

  • 2018-07-19T04:00:00Z on YouTube
  • 15 mins
  • United States
  • Documentary, Special Interest

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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