Why have we not yet found proof of alien life? According to astrophysicist Avi Loeb, we simply haven't dedicated the proper resources. Diving into unidentified phenomena such as the Oumuamua asteroid, he explores his scientific search for extraterrestrial technology, envisioning a future where ...

SETI researcher Seth Shostak bets that we will find extraterrestrial life in the next twenty-four years, or he'll buy you a cup of coffee. At TEDxSanJoseCA, he explains why new technologies and the laws of probability make the breakthrough so likely — and forecasts how the discovery of ...

Visit http://TED.com/shapeyourfuture to watch more groundbreaking talks from the TED Fellows. Astrophysicist and TED Fellow Sarah Rugheimer searches for aliens -- but not the cartoony green kind. She's looking for extraterrestrial microbes by studying how these single-celled organisms emit ...

In October 2017, astrobiologist Karen J. Meech got the call every astronomer waits for: NASA had spotted the very first visitor from another star system. The interstellar comet -- a half-mile-long object eventually named `Oumuamua, from the Hawaiian for "scout" or "messenger" -- raised intriguing ...

Visit http://TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. Aliens have invaded ancient history: they've cropped up in humanity's past through popular television and movies, displacing facts with absurd yet commonplace ...