Science

Drake Equation

For the existence of extraterrestrial civilizations

N = R* x fp x ne x fl x fi x fc x L

Where:

N = The number of civilizations in the Milky Way Galaxy whose electromagnetic emissions are detectable.

R* = The rate of formation of stars suitable for the development of intelligent life.

fp = The fraction of those stars with planetary systems.

ne = The number of planets, per solar system, with an environment suitable for life.

fl = The fraction of suitable planets on which life actually appears.

fi = The fraction of life bearing planets on which intelligent life emerges.

fc = The fraction of civilizations that develop a technology that releases detectable signs of their existence into space.

L = The length of time such civilizations release detectable signals into space.

There are an estimated 200 – 400 billion stars exist within our Milky Way, and modern estimates say that there between 1.65 ± 0.19 and 3 new star form every year.

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