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How many planets are there with extraterrestrial life? (The Drake Equation)

Author: tonagaiExecutions: 35008
TOP/Shared Formulas (Science)/Astronomy

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This calculates the Drake Equation: “How many planets are there with extraterrestrial life?”
R
個The number of stars born in the Milky Way in one year
fp
-The probability that a newly formed star will have planets
ne
個The number of planets capable of supporting life per star with at least one planet
fl
-The probability of life emerging on such a planet
fi
-The probability that life, once it has emerged, will evolve into intelligent life forms
fc
-The probability that intelligent life forms will develop a civilization capable of communicating with other stars
L
YearThe number of years such a civilization would use for communication
 個Number of Communicable Civilizations in the Milky Way

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