BBC - Universe - The Drake equation (pictures, video, facts & news)
Named for its creator, astrophysicist Frank Drake, the Drake equation is an attempt to estimate N, the number of advanced civilisations in the Milky Way
galaxy. Many of the numbers that go into the Drake equation can only be
guessed at, for example, the factor L, the average lifetime of an
advanced civilisation.
According to Drake, the average of people's best estimates suggests that there are about 10,000 technically advanced civilisations spread across our galaxy... Read More>>>
The Drake equation
According to Drake, the average of people's best estimates suggests that there are about 10,000 technically advanced civilisations spread across our galaxy... Read More>>>