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Announcement of evidence for aliens by 2020?

resultNo

Drake's Equation 2nd parameter f_p: What fraction of stars form planets?

0.873%

Drake's Equation 3rd parameter n_e: What is the average number of habitable planets per star?

0.0522
planets/star

Drake's Equation 4th parameter f_l: On what fraction of habitable planets does any form of life emerge?

8.89×10⁻⁴%

Drake's Equation 5th Parameter f_i: On what fraction of habitable planets with life does intelligence evolve?

3.48×10⁻⁴%

Drake's Equation 6th parameter f_c: What fraction of planets with intelligent life are capable of interstellar communication?

0.158%

Drake's Equation 7th parameter L: For how many years does a civilization remain detectable?

18k
years

By 2100, will the human population decrease by at least 10% during any period of 5 years?

35%chance

Ragnarök Question Series: overview

14
5 comments5
Ragnarök Series

Discussion page for the Fermi Paradox question series

13
2 comments2
Fermi Paradox Series