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Drake's Equation 7th parameter L: For how many years does a civilization remain detectable?
29.2k
161 forecasters
29
23 comments
23
Fermi Paradox Series
Conditional on civilization launching one or more von Neumann probes by 2200 that will reach another solar system within 100,000 years, what will be the average speed of the fastest one, in c (> 1)?
193
4 forecasters
9
17 comments
17
By 2100, will the human population decrease by at least 10% during any period of 5 years?
33%
355 forecasters
55
18 comments
18
Ragnarök Series
Announcement of evidence for aliens by 2020?
Resolved :
No
644 forecasters
44
44 comments
44
Drake's Equation 2nd parameter f_p: What fraction of stars form planets?
0.859
174 forecasters
37
17 comments
17
Fermi Paradox Series
Drake's Equation 3rd parameter n_e: What is the average number of habitable planets per star?
0.0453
175 forecasters
26
11 comments
11
Fermi Paradox Series
Drake's Equation 4th parameter f_l: On what fraction of habitable planets does any form of life emerge?
4.74×10⁻⁴
191 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?
2.44×10⁻⁴
163 forecasters
28
10 comments
10
Fermi Paradox Series
Drake's Equation 6th parameter f_c: What fraction of planets with intelligent life are capable of interstellar communication?
0.165
175 forecasters
30
14 comments
14
Fermi Paradox Series
Ragnarök Question Series: overview
14
5 comments
5
Ragnarök Series
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