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Astronomy

The Drake Equation and Factors for Estimating Intelligent Life

Quick fact

The Drake equation, proposed by Frank Drake in 1961, multiplies seven factors—from the rate of star formation to the lifetime of technological civilizations—to estimate the number of detectable civilizations. Its output can range from 1 to millions, depending on your assumptions.

Why this is interesting

Have you ever wondered how many alien civilizations might be out there? The Drake equation is a tool that tries to estimate that number—but its answers vary more than you might expect. Could we really be alone in a galaxy teeming with stars?

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The Drake Equation and Factors for Estimating Intelligent Life

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