Drake Equation — Fermi Paradox
R*
1.5
star formation rate/yr
fp
0.9
fraction with planets
ne
0.4
habitable planets per star
fl
0.1
fraction where life appears
fi
0.01
fraction with intelligence
fc
0.1
fraction that communicate
L
1000
years they transmit
N = detectable civilizations
0.1
Expected signals:
DETECTED: 0
The silence is deafening.