Tuesday, August 9, 2011

The Drake Equation

The drake Equation is one of the most Controversial equations which validate the existence of Extra terrestrial Civilizations in the Milky Way Galaxy.... The equation was built up by Professor Frank Drake in the year 1961.. This is a part i ripped off a website which describes the drake equation in a brief manner.

N = R* fp ne fl fi fc L
  • N = The number of communicative civilizations
  • R* = The rate of formation of suitable stars (stars such as our Sun)
  • fp = The fraction of those stars with planets. (Current evidence indicates that planetary systems may be common for stars like the Sun.)
  • ne = The number of Earth-like worlds per planetary system
  • fl = The fraction of those Earth-like planets where life actually develops
  • fi = The fraction of life sites where intelligence develops
  • fc = The fraction of communicative planets (those on which electromagnetic communications technology develops)
  • L = The "lifetime" of communicating civilizations.


Professor Frank Drake’s own solution to the Drake Equation estimates 10,000 potential communicative civilizations in the Milky Way Galaxy, Who serves on the SETI League’s advisory board, has personally endorsed SETI’s planned all sky survey.


And i would show below how the value 10 000 came as an answer.

  • The Steller Formation rate R* = 100 stars per year.
  • Planetary Formation Fp = 10% of stars in our galaxy are like our sun.
  • Earth-like Planets ne = 1.0 habitable planets around the star.
  • Evolution of life Fl = 10% of those earth like planets evolve life.
  • Evolution of Intelligence Fi = 100% of those planets with life have intelligent life.
  • Communications technology Fc = 1% of the planets with intelligence use radio technology.
  • Longevity L = 1000 000 years in communicative phase.
  • ESTIMATED CIVILIZATIONS N = 10 000 potential communications partners.

N= 100 x 10% x 1.0 x 10% x 100% x 1% x 1000 000 = 10 000

Average separation of these civilizations in the Milky Way: 1,988 light years

So there are 10 000 possibilities of communicating alien civilizations ... Pretty amazing isn't it.. So when will the Math would be proven correct?? As I heard the US government is considering to put out the confidential details of extra terrestrial related situations which would be a great breakthrough to mankind because the physics proves the existence of intelligent life so how can we deny the possibility when considering the size of the universe and the unlimited possibilities.
The average separation has been calculated between such civilizations which gives us a value of 1988 light years.
The calculation is shows down below:-

For the curiosity i have i calculated the average distance in Kilometers will be able to found as follows.

Speed of light = 299 792 458 m/s
The distance of a light year = 299792458x60x60x24x365.25 m
= 9460730473000 km
There for average distance to other drake stars would be =1988x9460730473000 km
=18807932180000000 km
Pretty long distance but im sure we will overcome it one day ...


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