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
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Distance around our Sun supporting Life
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Originally narrow, between Venus & Mars
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Depends on planet size, capability of life to
survive in various conditions
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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
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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
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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
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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
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50 years…
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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
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500 years…
Brains/Bodies enhanced (“bionics”)
 Lifetimes, Adaptability increase
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Questions…
 Room to survive?
 Resolve to allow “Cyborgs”?
 Reasons to explore?
The Potential for Human Evolution
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5000 years…
What is “human”?
 Fully “artificial” 1000+ year lifetime
 Able to travel for 1000 [email protected] high speeds
 Able to reach nearby stars…
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Questions…
 What will “we” find?