drake equation Proving EBE outside of earth.

 

here is an equation created by Frank Drake that basically goes like this:

N=R* x f(p) x n(e) x f(l) x f(i) x f(c) x L

 

N = # of civilizations in our galaxy where communication might be possible

R* = the average rate of star formation/year in our galaxy

f(p) = the fraction of those stars that have planets

n(e) = the average # of planets that can support life/star that has planets

f(l) = fraction of n(e) that can actually go on to support life at some point

f(i) = the fraction of f(l) that can develop intelligent life

L = length of time it would take to release detectable signals into space

 

The most recently accepted numbers for each of these are as follows:

R*=7

f(p)=1/2

n(e)=2

f(l)=.33

f(i)=.01

f(c)=.01

L=10000

 

This would make N=2.31, which means that there are about 2-3 civilizations in a galaxy can communicate at any given time. This would also leave 200 more that aren't trying to communicate.

 

And this is only within our galaxy, so it doesn't include the whole universe.

 

we may be living proof of our own equation.