What is the Fermi Paradox?
Quick Answer
The Fermi Paradox is the apparent contradiction between the high probability that extraterrestrial civilisations exist and the lack of any evidence or contact.
The Full Story
In 1950, physicist Enrico Fermi reportedly asked during lunch: “Where is everybody?” Given the billions of stars in the Milky Way, many older than the Sun and likely hosting planets, statistically some should have produced intelligent life that could have spread across the galaxy. Yet we have no confirmed evidence of alien civilisations, no radio signals, no visiting probes and no megastructures. Proposed explanations include the Great Filter theory (something prevents civilisations from becoming interstellar), the zoo hypothesis (aliens observe but do not contact us), the idea that advanced civilisations self-destruct, or simply that the galaxy is so vast that contact is extremely difficult.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Where is everybody? — the Fermi Paradox explained"