Where are all the aliens?

Watch and share today’s TED Talk. View it in your browser.

July 19, 2018 Today's TED Talk Where are all the aliens? 13:18 minutes · TED2018 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. Watch now »   Playlist of the Day What would it be like to live on another planet? Forget the rest of solar system -- Mars is humanity's next destination. We keep talking about it, but what would it really be like to live there? Watch » 7 talks · Total run time 1:29:14 JOIN US AT TEDWOMEN THIS NOVEMBER Join us at TEDWomen 2018 to celebrate diverse, dynamic ideas and the people who are showing up to bring them to life. Apply now »   Download the TED app

You are receiving this email because you've subscribed to our mailing list. You might also like our weekly emails, compiling all the week’s TED Talks in one handy mailing. Copyright © 2018 TED, All rights reserved. You're receiving the TED Talks daily email because you subscribed to it on TED.com. (Was this forwarded by a friend? You can sign up here: http://www.ted.com/newsletter ) Our mailing address is: TED 330 Hudson Street 11th Floor New York, NY 10013 Add us to your address book unsubscribe from this list   update subscription preferences   view email in browser