Giorgio Bianciardi

University of Siena

Exogenous deliveryExogenous deliveryIDPs =10IDPs =109 9 – 10– 1066 Kg C/yr Kg C/yrAirbust = 10Airbust = 1088 - 10 - 1055 “ “Comet = 10Comet = 1066 - 10 - 1033 “ “Meteorites= 10Meteorites= 1044 - 10 “ - 10 “

Impact synthesisImpact synthesisPost- impact plumes Post- impact plumes = 10= 1044 – 10 Kg C/yr – 10 Kg C/yr Meteors = 10Meteors = 103 3 - < 1 “ - < 1 “ Airbust = 10Airbust = 1022- <1 “- <1 “

Endogenous source of prebiotic Endogenous source of prebiotic organics (neutral atmosphere)organics (neutral atmosphere)Lightning = 3Lightning = 377 Kg C/yr Kg C/yr Coronal Discharge = 2Coronal Discharge = 26 6 “ “UV light = 3UV light = 388 “ “

50% H50% H2200

What is Life?What is Life?

Life is a complex, ordered, chemical system able to replicate Life is a complex, ordered, chemical system able to replicate itself through autocatalysis and to make mistakes that gradually itself through autocatalysis and to make mistakes that gradually increase the efficiency of the autocatalysis increase the efficiency of the autocatalysis (A. Brack, modified)(A. Brack, modified)

G = G = H - T H - T S S S < 0 AND S < 0 AND G<0 if G<0 if H << 0 H << 0

(liquid) (liquid) Bènard cells. (blood vessels) Bènard cells. (blood vessels) Life is “soft matter”Life is “soft matter”

ECG

L-Z = 0.66 = 1/f

Nondeterministic Physics: life is structured randomnessNondeterministic Physics: life is structured randomness

FractalsFractals

Dyson, 1982Dyson, 1982

R. Popa, 2004R. Popa, 2004

EVOLUTION

EVOLUTION