How Would We Communicate with Alien Life? - with Carl Sagan
18:02
What would intelligent aliens look like? How Extraterrestrials may evolve
51:38
Why Have We Not Found Any Aliens? - with Keith Cooper
18:07
My Search for Proof Aliens Exist | Avi Loeb | TED
9:04
1967: CARL SAGAN on the search for INTELLIGENT LIFE | Where Is Everybody? | BBC Archive
9:24
The true story behind Carl Sagan’s cult classic, Contact | Jill Tarter for Big Think
53:47
The Physics of Magnetic Monopoles - with Felix Flicker
26:07
Parler aux extraterrestres
15:27