Why the Universe Is So Quiet: The Great Silence Explained

The universe is 13.8 billion years old and full of planets. So why haven't we heard from anyone? A long, calm documentary about the Fermi paradox: from the 72-second Wow! signal of 1977 to a possible biosignature on Mars, the ocean of Enceladus and the debate over K2-18b. Chapters 00:00 Seventy-two seconds 03:17 A question over lunch 06:41 Counting the stars 10:55 The problem of time 14:48 How hard have we listened? 18:39 Rare, filtered, or early 23:16 The stranger answers 27:38 The search gets real 32:03 Our own whisper 35:34 The pale blue dot Cosmos After Midnight: long, calm documentaries about the universe. Visuals are original illustrations created for this channel.