Calculadora de la Ecuación de Drake Gratis
Estima el número de civilizaciones detectables en la galaxia usando la ecuación de Drake.
Detectable Civilisations (N)
0.04
Detectable Civilisations (N) vs Civilisation Lifetime (L)
Fórmula
## The Drake Equation **N = R* × fp × ne × fl × fi × fc × L** - **R*** = rate of suitable star formation (stars/year) - **fp** = fraction with planetary systems - **ne** = habitable planets per system - **fl** = fraction where life develops - **fi** = fraction developing intelligence - **fc** = fraction developing detectable technology - **L** = years a civilisation remains detectable Formulated by Frank Drake in 1961, this is a framework for thinking about extraterrestrial intelligence, not a precise prediction. Estimates of N range from less than 1 to millions.
Ejemplo Resuelto
Moderate estimates for each parameter.
- 01N = 1.5 × 1.0 × 0.2 × 0.13 × 0.01 × 0.01 × 10000
- 02= 1.5 × 0.2 × 0.13 × 0.01 × 0.01 × 10000
- 03= 1.5 × 0.2 × 0.13 × 1 = 0.039
- 04N ≈ 0.039 (suggests we may be alone in the Galaxy with these values)
- 05Adjusting L to 1 000 000 years gives N ≈ 3.9
Preguntas Frecuentes
Is the Drake equation scientific?
It is a useful probabilistic framework, not a testable equation. Most parameters are poorly constrained, especially fl, fi, and fc. It structures the search for extraterrestrial intelligence.
What is the Fermi Paradox?
If N is large, where is everybody? The apparent absence of evidence for alien civilisations despite high estimates from the Drake equation is called the Fermi Paradox.
Which parameter is most uncertain?
L (civilisation lifetime) and fl (life formation probability) are the most uncertain, each spanning orders of magnitude in estimates.