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Carl Sagan Explains the Drake Equation
FreeScienceLectures
2007-06-05
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The most famous American astronomer and astrophysicist Carl Sagan explains the Drake equation.
The Drake equation (rarely also called the Green Bank equation or the Sagan equation) is a famous result in the speculative fields of xenobiology, astrosociobiology and the search for extraterrestrial intelligence.
The Drake equation states that:
N = R*
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