The Drake Equation: A 1961 Thought Experiment Guiding Modern Ideas on Extraterrestrial Life and Technosignatures

To the point

Frank Drake’s 1961 Drake Equation, discussed at Green Bank with Carl Sagan and Philip Morrison, is a simple, rough framework that multiplies key factors to estimate how many civilizations’ signals could be detectable in the Milky Way and has evolved into a broad, thought‑provoking concept of technosignatures rather than a precise calculator.

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Why alien hunters have spent 60 years finding new solutions for the Drake Equation
nationalgeographic.com

Why alien hunters have spent 60 years finding new solutions for the Drake Equation

Astronomer Frank Drake came up with the famous formula as he prepared for a last-minute meeting in 1961. It still guides the search for intelligent life beyond Earth.