I welcome the Aliens

lcrcboy

http://www.bbc.co.uk/news/science-environment-13423085

just came across this interesting stuff

Son Of A Vidic

The famous Drake equation was designed to try and calculate the number of intelligent civilisations in our Galaxy.

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

Frank Drake himself estimated there could be perhaps 10,000 intelligent civilisations in our Milky Way galaxy alone.

CrazyRabbit

Corvus Maximus wrote: »

The famous Drake equation was designed to try and calculate the number of intelligent civilisations in our Galaxy.

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

Frank Drake himself estimated there could be perhaps 10,000 intelligent civilisations in our Milky Way galaxy alone.

Depending on liberal or conservative guesses for each unknown variable, you could end up with 10 or 100,000,000.

Now, where have I heard this before?

maninasia

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


The ideas in this 'equation' are too limiting.

lcrcboy

check this out very interesting and talks about the drake factor:



http://www.youtube.com/watch?v=POJAlpEWILc

RichieC

It would be an awful waste of space if there wasn't.