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Stephen Webb: Where are all the aliens?
About this film
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.
Directors & creators
TED.com
Subjects
Tedtalks;TED;Talks;astronomy;cosmos;universe;science;space;physics;time;exploration;Planets;TED2017;2018
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