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Drake's Equation 3rd parameter n_e: What is the average number of habitable planets per star?
0.0522
176 forecasters
26
11 comments
11
Fermi Paradox Series
Drake's Equation 6th parameter f_c: What fraction of planets with intelligent life are capable of interstellar communication?
0.158
174 forecasters
30
14 comments
14
Fermi Paradox Series
Announcement of evidence for aliens by 2020?
Resolved :
No
1%
644 forecasters
44
44 comments
44
Drake's Equation 2nd parameter f_p: What fraction of stars form planets?
0.874
175 forecasters
37
18 comments
18
Fermi Paradox Series
Drake's Equation 4th parameter f_l: On what fraction of habitable planets does any form of life emerge?
8.89×10⁻⁴
192 forecasters
42
24 comments
24
Fermi Paradox Series
Drake's Equation 5th Parameter f_i: On what fraction of habitable planets with life does intelligence evolve?
3.48×10⁻⁴
164 forecasters
28
10 comments
10
Fermi Paradox Series
Drake's Equation 7th parameter L: For how many years does a civilization remain detectable?
23.8k
162 forecasters
29
23 comments
23
Fermi Paradox Series
By 2100, will the human population decrease by at least 10% during any period of 5 years?
35%
377 forecasters
58
20 comments
20
Ragnarök Series
Ragnarök Question Series: overview
14
5 comments
5
Ragnarök Series
Discussion page for the Fermi Paradox question series
13
2 comments
2
Fermi Paradox Series
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