Fermi Paradox Explained: If There Are TRILLIONS of Planets in Space, Why Hasn’t Anyone Contacted Us?

0:00 The 1940s lunch conversation that started it all 0:12 "So, where is everybody?" — Enrico Fermi's famous question 0:30 Why hasn't anyone communicated with or colonized Earth? 0:39 The Fermi paradox defined 0:52 Why haven't we detected extraterrestrial life? 0:58 The scale of the universe: one septillion stars 1:09 A septillion = 1 followed by 24 zeroes 1:16 Our Milky Way: 100 billion stars, 100 billion planets 1:32 Billions of galaxies beyond our own 1:38 Statistically, Earth-like planets SHOULD exist 1:42 The music festival analogy: nobody responds to your sign 2:01 The Drake equation: estimating alien civilizations 2:14 Any civilization with rocket tech could colonize the galaxy 2:30 Autonomous robots could colonize over millions of years 2:47 Our galaxy is billions of years old — where are they? 2:53 Hypothesis 1: colonization requires enormous resources 3:17 Hypothesis 2: civilizations choose NOT to colonize 3:27 Would Earth's population approve a colonization mission? 3:47 Hypothesis 3: aliens observe us without revealing themselves 3:58 The Great Filter theory: catastrophic events stop civilizations 4:12 Wars and disasters prevent civilizations from advancing 4:18 The Fermi paradox remains one of the biggest mysteries 4:31 Solving it could redefine humanity's place in the cosmos