drake {extraterrestrial} | R Documentation |
The classical Drake 1961 equation.
drake(R, fp, Ne, fl, fi, fc, L)
R |
the star formation rate. |
fp |
the fraction of stars with planetary systems. |
Ne |
the number of habitable planets in a planetary system. |
fl |
the fraction of the habitable planets that developed life. |
fi |
the fraction of planets with life form that developed intelligence. |
fc |
the fraction of civilizations that perform interstellar communications. |
L |
length of time for civilizations to transmit detectable signals in space. |
N the Drake Number. The number of civilizations in the galaxy that communicates.
Antonio, J., & Molina, M. (2019). Searching for a standard Drake equation. Journal of the British Interplanetary Society (JBIS) (Vol. 72).
drake(R=2, fp=.45, Ne=0.5, fl=0.2, fi=0.05, fc=0.5, L=500 )