Drakes Equation & Life in Space
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Transcript Drakes Equation & Life in Space
The Chances for
(Intelligent) Life?
Is
there intelligent life elsewhere?
How could we contact them?
How will humanity evolve?
The Chances for Intelligent Lift?
The Habitable Zone
Distance around our Sun supporting Life
Originally narrow, between Venus & Mars
Depends on planet size, capability of life to
survive in various conditions
Now – Venus to Jupiter? Even Moons of
giant planets?
Habitable Zone
Habitable Zone
Drake’s Equation
N = R* x fplanet x ne x flife x f intell x fciv x L
N = # intelligent, transmitting civilizations
R* = # stars formed/year
fplanet = fraction of stars w/ planets
ne = # of planets/system that can support life
flife = fraction that develop life
f intell = fraction with life that becomes intelligence
fciv = fraction that produce interstellar communications capability
L = “Lifetime” of how long they try to communicate
Drake’s Equation Example
N = R* x fplanet x ne x flife x f intell x fciv x L
R* = 40 (400 Billion stars in our galaxy about 10 BY old)
fplanet = 50%
ne = 0.5
flife = 1 (optimistic – we did, so others could too!)
f intell = 1
fciv = 1
L = 10,000 years
N =100,000 communicating, intelligent civilizations in the Milky Way alone!
Drake’s Equation Example
N = R* x fplanet x ne x flife x f intell x fciv x L
R* = 40 (400 Billion stars in our galaxy about 10 BY old)
fplanet = 50%
ne = 0.1
flife = 0.000001 (one in a million!)
f intell = 1
fciv = 1
L = 100 years (before we blow ourselves up??)
N =<<1 communicating, intelligent civilization in the Milky Way – US!!
The Potential for Human Evolution
50 years…
Smart prosthetics for limbs AND organs
Genetic ID/elimination of hereditary disease
Computers & AI improve
Nanotechnology increases
Questions…
Fusion?
Food?
Water?
The Potential for Human Evolution
500 years…
Brains/Bodies enhanced (“bionics”)
Lifetimes, Adaptability increase
Questions…
Room to survive?
Resolve to allow “Cyborgs”?
Reasons to explore?
The Potential for Human Evolution
5000 years…
What is “human”?
Fully “artificial” 1000+ year lifetime
Able to travel for 1000 years@ high speeds
Able to reach nearby stars…
Questions…
What will “we” find?