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La fin du monde
Évolution des températures minimales et maximales
1848 1970
19951910
Septembre 1979 – Septembre 2005
================ METHANE======= MILLIARD
Drake Equation
N = R* fp ne fl fi fc LRate of
formation of Sun-
like stars
Fraction of stars
with planets
# of Earthlike planets
per system
Fraction on which life arises
Fraction that evolve intelligence
Lifetime of advanced
civilizations
Fraction that
commun- icate
# of advanced
civilizations we can contact
Frank Drake
~10
HD 188753149 a.l., système triple
Eventuel satellite rocheux
Hot Jupiter, 2005
Gliese 581c (20 a.l., zone habitable), avril 2007
Laetoli (Tanzanie) : 3,7 Ma Mer de la Tranquillité (Lune), 1969
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