- Frank Drake and its calculation -
 
ARTICLE
The demonstration of the existence of extraterrestrial life

With approximate data Drake shows how many races as we exist in the Milky Way

Frank Drake in 1961 he exhibited his theory regarding the existence of life in space. Had it with this equation:

N = R * × fp × ne × fl × fi × fc × L

Let's see what it means ...

  • N: number of civilizations that exist in space Milky Way Is the unknown
  • R *: number of stars in the Milky Way, about 25'000'000'000 (25 × 10 ^ 9)
  • fp: fraction of stars that have planets , One on 5 (1 / 5)
  • ne: fraction of planets capable of supporting the life , 2 star
  • fl: fraction of planets where life begins, one in 100 (1 / 100)
  • fi: fraction of planets on which evolves l ' intelligence , One in 10 (1 / 10)
  • fc: fraction of planets where they developed a civilization scientifically advanced like ours, one in 10 (1 / 10)
  • L: number of years of survival civilization, 10,000 (Duration civiltà) / 10'000'000'000 (existence universe) = 1 / 1'000'000

So doing the calculation with the approximate data ...

25'000'000'000 × N = [(1 / 5) × 2 × (1 / 100) × (1 / 10) × (1 / 10) × (1 / 1'000'000)] =

= 25'000'000'000 × [0.2 × 2 × 0.01 × 0.1 × 0.1 × 0.000001] =

= 0.00000000004 × 25'000'000'000 = 1

What does it mean? Hypothetically that there is a race in the Milky Way developed as ours.

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 Frank Drake
 

Frank Drake


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